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Finding the Fourth Proportional to 663,551.62, 915,701.70 and 361,745.62

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Solution

The fourth proportional to 663,551.62, 915,701.70 and 361,745.62 is: 499,209.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,551.62 : 915,701.70 = 361,745.62 : x
  2. Step 2: Convert to fraction form
    663,551.62/915,701.70 = 361,745.62/x
  3. Step 3: Cross multiply
    663,551.62x = 915,701.70 × 361,745.62
  4. Step 4: Simplify right side
    663,551.62x = 331,251,079,201.55
  5. Step 5: Solve for x
    x = 331,251,079,201.55/663,551.62
  6. Step 6: Final answer
    x = 499,209.21

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1.5x scale

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.