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Finding the Fourth Proportional to 656,778.62, 985,177.66 and 433,568.54

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Solution

The fourth proportional to 656,778.62, 985,177.66 and 433,568.54 is: 650,359.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,778.62 : 985,177.66 = 433,568.54 : x
  2. Step 2: Convert to fraction form
    656,778.62/985,177.66 = 433,568.54/x
  3. Step 3: Cross multiply
    656,778.62x = 985,177.66 × 433,568.54
  4. Step 4: Simplify right side
    656,778.62x = 427,142,039,686.82
  5. Step 5: Solve for x
    x = 427,142,039,686.82/656,778.62
  6. Step 6: Final answer
    x = 650,359.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.