Home / 1,213,088,888.30-1,819,633,332.45-486,598,981.10

Finding the Fourth Proportional to 1,213,088,888.30, 1,819,633,332.45 and 486,598,981.10

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Solution

The fourth proportional to 1,213,088,888.30, 1,819,633,332.45 and 486,598,981.10 is: 729,898,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,088,888.30 : 1,819,633,332.45 = 486,598,981.10 : x
  2. Step 2: Convert to fraction form
    1,213,088,888.30/1,819,633,332.45 = 486,598,981.10/x
  3. Step 3: Cross multiply
    1,213,088,888.30x = 1,819,633,332.45 × 486,598,981.10
  4. Step 4: Simplify right side
    1,213,088,888.30x = 885,431,725,545,767,680
  5. Step 5: Solve for x
    x = 885,431,725,545,767,680/1,213,088,888.30
  6. Step 6: Final answer
    x = 729,898,471.65

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Half scale
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Double scale
Find fourth proportional to 1,213,088,889.30, 1,819,633,333.95 and 486,598,982.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.