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Finding the Fourth Proportional to 663,682.07, 915,882.17 and 361,876.07

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Solution

The fourth proportional to 663,682.07, 915,882.17 and 361,876.07 is: 499,389.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,682.07 : 915,882.17 = 361,876.07 : x
  2. Step 2: Convert to fraction form
    663,682.07/915,882.17 = 361,876.07/x
  3. Step 3: Cross multiply
    663,682.07x = 915,882.17 × 361,876.07
  4. Step 4: Simplify right side
    663,682.07x = 331,435,840,262.67
  5. Step 5: Solve for x
    x = 331,435,840,262.67/663,682.07
  6. Step 6: Final answer
    x = 499,389.47

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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.