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Finding the Fourth Proportional to 858,397.50, 1,287,825.89 and 297,432

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Solution

The fourth proportional to 858,397.50, 1,287,825.89 and 297,432 is: 446,227.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,397.50 : 1,287,825.89 = 297,432 : x
  2. Step 2: Convert to fraction form
    858,397.50/1,287,825.89 = 297,432/x
  3. Step 3: Cross multiply
    858,397.50x = 1,287,825.89 × 297,432
  4. Step 4: Simplify right side
    858,397.50x = 383,040,628,627.32
  5. Step 5: Solve for x
    x = 383,040,628,627.32/858,397.50
  6. Step 6: Final answer
    x = 446,227.57

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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.