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Finding the Fourth Proportional to 499,593.28, 688,612.91 and 372,222.40

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Solution

The fourth proportional to 499,593.28, 688,612.91 and 372,222.40 is: 513,051.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,593.28 : 688,612.91 = 372,222.40 : x
  2. Step 2: Convert to fraction form
    499,593.28/688,612.91 = 372,222.40/x
  3. Step 3: Cross multiply
    499,593.28x = 688,612.91 × 372,222.40
  4. Step 4: Simplify right side
    499,593.28x = 256,317,146,143.21
  5. Step 5: Solve for x
    x = 256,317,146,143.21/499,593.28
  6. Step 6: Final answer
    x = 513,051.63

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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.