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Finding the Fourth Proportional to 499,023.68, 687,935.65 and 355,534.61

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Solution

The fourth proportional to 499,023.68, 687,935.65 and 355,534.61 is: 490,126.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,023.68 : 687,935.65 = 355,534.61 : x
  2. Step 2: Convert to fraction form
    499,023.68/687,935.65 = 355,534.61/x
  3. Step 3: Cross multiply
    499,023.68x = 687,935.65 × 355,534.61
  4. Step 4: Simplify right side
    499,023.68x = 244,584,929,588.17
  5. Step 5: Solve for x
    x = 244,584,929,588.17/499,023.68
  6. Step 6: Final answer
    x = 490,126.91

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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.