Home / 858,893.28-1,287,939.92-318,773.40

Finding the Fourth Proportional to 858,893.28, 1,287,939.92 and 318,773.40

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Solution

The fourth proportional to 858,893.28, 1,287,939.92 and 318,773.40 is: 478,011.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,893.28 : 1,287,939.92 = 318,773.40 : x
  2. Step 2: Convert to fraction form
    858,893.28/1,287,939.92 = 318,773.40/x
  3. Step 3: Cross multiply
    858,893.28x = 1,287,939.92 × 318,773.40
  4. Step 4: Simplify right side
    858,893.28x = 410,560,987,294.13
  5. Step 5: Solve for x
    x = 410,560,987,294.13/858,893.28
  6. Step 6: Final answer
    x = 478,011.64

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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.