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Finding the Fourth Proportional to 659,695.55, 910,477.55 and 418,000.61

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Solution

The fourth proportional to 659,695.55, 910,477.55 and 418,000.61 is: 576,902.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,695.55 : 910,477.55 = 418,000.61 : x
  2. Step 2: Convert to fraction form
    659,695.55/910,477.55 = 418,000.61/x
  3. Step 3: Cross multiply
    659,695.55x = 910,477.55 × 418,000.61
  4. Step 4: Simplify right side
    659,695.55x = 380,580,169,201.30
  5. Step 5: Solve for x
    x = 380,580,169,201.30/659,695.55
  6. Step 6: Final answer
    x = 576,902.74

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1.5x scale

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.