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Finding the Fourth Proportional to 880,732.76, 1,215,404.36 and 478,324.76

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Solution

The fourth proportional to 880,732.76, 1,215,404.36 and 478,324.76 is: 660,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,732.76 : 1,215,404.36 = 478,324.76 : x
  2. Step 2: Convert to fraction form
    880,732.76/1,215,404.36 = 478,324.76/x
  3. Step 3: Cross multiply
    880,732.76x = 1,215,404.36 × 478,324.76
  4. Step 4: Simplify right side
    880,732.76x = 581,357,998,799.95
  5. Step 5: Solve for x
    x = 581,357,998,799.95/880,732.76
  6. Step 6: Final answer
    x = 660,084.45

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Double scale
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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.