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Finding the Fourth Proportional to 663,254.98, 915,032.02 and 408,163.30

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Solution

The fourth proportional to 663,254.98, 915,032.02 and 408,163.30 is: 563,105.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,254.98 : 915,032.02 = 408,163.30 : x
  2. Step 2: Convert to fraction form
    663,254.98/915,032.02 = 408,163.30/x
  3. Step 3: Cross multiply
    663,254.98x = 915,032.02 × 408,163.30
  4. Step 4: Simplify right side
    663,254.98x = 373,482,488,888.87
  5. Step 5: Solve for x
    x = 373,482,488,888.87/663,254.98
  6. Step 6: Final answer
    x = 563,105.44

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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.