Home / 1,213,891.20-1,820,836.80-315,259.20

Finding the Fourth Proportional to 1,213,891.20, 1,820,836.80 and 315,259.20

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Solution

The fourth proportional to 1,213,891.20, 1,820,836.80 and 315,259.20 is: 472,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,891.20 : 1,820,836.80 = 315,259.20 : x
  2. Step 2: Convert to fraction form
    1,213,891.20/1,820,836.80 = 315,259.20/x
  3. Step 3: Cross multiply
    1,213,891.20x = 1,820,836.80 × 315,259.20
  4. Step 4: Simplify right side
    1,213,891.20x = 574,035,552,898.56
  5. Step 5: Solve for x
    x = 574,035,552,898.56/1,213,891.20
  6. Step 6: Final answer
    x = 472,888.80

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Double scale
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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.