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Finding the Fourth Proportional to 663,650.80, 915,839.02 and 361,844.80

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Solution

The fourth proportional to 663,650.80, 915,839.02 and 361,844.80 is: 499,346.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,650.80 : 915,839.02 = 361,844.80 : x
  2. Step 2: Convert to fraction form
    663,650.80/915,839.02 = 361,844.80/x
  3. Step 3: Cross multiply
    663,650.80x = 915,839.02 × 361,844.80
  4. Step 4: Simplify right side
    663,650.80x = 331,391,587,024.10
  5. Step 5: Solve for x
    x = 331,391,587,024.10/663,650.80
  6. Step 6: Final answer
    x = 499,346.32

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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.