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Finding the Fourth Proportional to 663,257.62, 915,035.70 and 408,165.94

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Solution

The fourth proportional to 663,257.62, 915,035.70 and 408,165.94 is: 563,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,257.62 : 915,035.70 = 408,165.94 : x
  2. Step 2: Convert to fraction form
    663,257.62/915,035.70 = 408,165.94/x
  3. Step 3: Cross multiply
    663,257.62x = 915,035.70 × 408,165.94
  4. Step 4: Simplify right side
    663,257.62x = 373,486,406,624.06
  5. Step 5: Solve for x
    x = 373,486,406,624.06/663,257.62
  6. Step 6: Final answer
    x = 563,109.11

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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.