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Finding the Fourth Proportional to 439,615.96, 655,473.36 and 402,082.38

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Solution

The fourth proportional to 439,615.96, 655,473.36 and 402,082.38 is: 599,510.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,615.96 : 655,473.36 = 402,082.38 : x
  2. Step 2: Convert to fraction form
    439,615.96/655,473.36 = 402,082.38/x
  3. Step 3: Cross multiply
    439,615.96x = 655,473.36 × 402,082.38
  4. Step 4: Simplify right side
    439,615.96x = 263,554,290,123.21
  5. Step 5: Solve for x
    x = 263,554,290,123.21/439,615.96
  6. Step 6: Final answer
    x = 599,510.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.