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Finding the Fourth Proportional to 498,343.28, 687,792.48 and 316,866.02

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Solution

The fourth proportional to 498,343.28, 687,792.48 and 316,866.02 is: 437,325.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,343.28 : 687,792.48 = 316,866.02 : x
  2. Step 2: Convert to fraction form
    498,343.28/687,792.48 = 316,866.02/x
  3. Step 3: Cross multiply
    498,343.28x = 687,792.48 × 316,866.02
  4. Step 4: Simplify right side
    498,343.28x = 217,938,065,723.53
  5. Step 5: Solve for x
    x = 217,938,065,723.53/498,343.28
  6. Step 6: Final answer
    x = 437,325.18

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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.