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Finding the Fourth Proportional to 656,839.02, 905,959.14 and 502,139.94

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Solution

The fourth proportional to 656,839.02, 905,959.14 and 502,139.94 is: 692,587.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,839.02 : 905,959.14 = 502,139.94 : x
  2. Step 2: Convert to fraction form
    656,839.02/905,959.14 = 502,139.94/x
  3. Step 3: Cross multiply
    656,839.02x = 905,959.14 × 502,139.94
  4. Step 4: Simplify right side
    656,839.02x = 454,918,268,202.05
  5. Step 5: Solve for x
    x = 454,918,268,202.05/656,839.02
  6. Step 6: Final answer
    x = 692,587.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.