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Finding the Fourth Proportional to 663,763.24, 915,996.90 and 361,950.76

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Solution

The fourth proportional to 663,763.24, 915,996.90 and 361,950.76 is: 499,494.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,763.24 : 915,996.90 = 361,950.76 : x
  2. Step 2: Convert to fraction form
    663,763.24/915,996.90 = 361,950.76/x
  3. Step 3: Cross multiply
    663,763.24x = 915,996.90 × 361,950.76
  4. Step 4: Simplify right side
    663,763.24x = 331,545,774,112.64
  5. Step 5: Solve for x
    x = 331,545,774,112.64/663,763.24
  6. Step 6: Final answer
    x = 499,494.03

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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.