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Finding the Fourth Proportional to 661,192.53, 912,381.92 and 370,815.88

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Solution

The fourth proportional to 661,192.53, 912,381.92 and 370,815.88 is: 511,690.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,192.53 : 912,381.92 = 370,815.88 : x
  2. Step 2: Convert to fraction form
    661,192.53/912,381.92 = 370,815.88/x
  3. Step 3: Cross multiply
    661,192.53x = 912,381.92 × 370,815.88
  4. Step 4: Simplify right side
    661,192.53x = 338,325,700,425.86
  5. Step 5: Solve for x
    x = 338,325,700,425.86/661,192.53
  6. Step 6: Final answer
    x = 511,690.14

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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.