Home / 1,213,088,892.30-1,819,633,338.45-486,598,985.10

Finding the Fourth Proportional to 1,213,088,892.30, 1,819,633,338.45 and 486,598,985.10

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Solution

The fourth proportional to 1,213,088,892.30, 1,819,633,338.45 and 486,598,985.10 is: 729,898,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,088,892.30 : 1,819,633,338.45 = 486,598,985.10 : x
  2. Step 2: Convert to fraction form
    1,213,088,892.30/1,819,633,338.45 = 486,598,985.10/x
  3. Step 3: Cross multiply
    1,213,088,892.30x = 1,819,633,338.45 × 486,598,985.10
  4. Step 4: Simplify right side
    1,213,088,892.30x = 885,431,735,743,894,912
  5. Step 5: Solve for x
    x = 885,431,735,743,894,912/1,213,088,892.30
  6. Step 6: Final answer
    x = 729,898,477.65

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Double scale
Find fourth proportional to 1,213,088,893.30, 1,819,633,339.95 and 486,598,986.10
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.