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Finding the Fourth Proportional to 585,414.90, 876,810.15 and 480,438.90

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Solution

The fourth proportional to 585,414.90, 876,810.15 and 480,438.90 is: 719,581.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,414.90 : 876,810.15 = 480,438.90 : x
  2. Step 2: Convert to fraction form
    585,414.90/876,810.15 = 480,438.90/x
  3. Step 3: Cross multiply
    585,414.90x = 876,810.15 × 480,438.90
  4. Step 4: Simplify right side
    585,414.90x = 421,253,703,974.84
  5. Step 5: Solve for x
    x = 421,253,703,974.84/585,414.90
  6. Step 6: Final answer
    x = 719,581.45

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.