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Finding the Fourth Proportional to 658,011.90, 908,059.32 and 356,205.90

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Solution

The fourth proportional to 658,011.90, 908,059.32 and 356,205.90 is: 491,565.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,011.90 : 908,059.32 = 356,205.90 : x
  2. Step 2: Convert to fraction form
    658,011.90/908,059.32 = 356,205.90/x
  3. Step 3: Cross multiply
    658,011.90x = 908,059.32 × 356,205.90
  4. Step 4: Simplify right side
    658,011.90x = 323,456,087,333.99
  5. Step 5: Solve for x
    x = 323,456,087,333.99/658,011.90
  6. Step 6: Final answer
    x = 491,565.71

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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.