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Finding the Fourth Proportional to 663,244.62, 915,017.76 and 408,152.94

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Solution

The fourth proportional to 663,244.62, 915,017.76 and 408,152.94 is: 563,091.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,244.62 : 915,017.76 = 408,152.94 : x
  2. Step 2: Convert to fraction form
    663,244.62/915,017.76 = 408,152.94/x
  3. Step 3: Cross multiply
    663,244.62x = 915,017.76 × 408,152.94
  4. Step 4: Simplify right side
    663,244.62x = 373,467,188,896.21
  5. Step 5: Solve for x
    x = 373,467,188,896.21/663,244.62
  6. Step 6: Final answer
    x = 563,091.17

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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.