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Finding the Fourth Proportional to 663,251.85, 915,027.71 and 408,160.17

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Solution

The fourth proportional to 663,251.85, 915,027.71 and 408,160.17 is: 563,101.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,251.85 : 915,027.71 = 408,160.17 : x
  2. Step 2: Convert to fraction form
    663,251.85/915,027.71 = 408,160.17/x
  3. Step 3: Cross multiply
    663,251.85x = 915,027.71 × 408,160.17
  4. Step 4: Simplify right side
    663,251.85x = 373,477,863,627.51
  5. Step 5: Solve for x
    x = 373,477,863,627.51/663,251.85
  6. Step 6: Final answer
    x = 563,101.13

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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.