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Finding the Fourth Proportional to 660,882.38, 912,020.11 and 359,076.38

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Solution

The fourth proportional to 660,882.38, 912,020.11 and 359,076.38 is: 495,526.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,882.38 : 912,020.11 = 359,076.38 : x
  2. Step 2: Convert to fraction form
    660,882.38/912,020.11 = 359,076.38/x
  3. Step 3: Cross multiply
    660,882.38x = 912,020.11 × 359,076.38
  4. Step 4: Simplify right side
    660,882.38x = 327,484,874,128.21
  5. Step 5: Solve for x
    x = 327,484,874,128.21/660,882.38
  6. Step 6: Final answer
    x = 495,526.72

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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.