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Finding the Fourth Proportional to 572,397.76, 858,840.72 and 287,938.72

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Solution

The fourth proportional to 572,397.76, 858,840.72 and 287,938.72 is: 432,030.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,397.76 : 858,840.72 = 287,938.72 : x
  2. Step 2: Convert to fraction form
    572,397.76/858,840.72 = 287,938.72/x
  3. Step 3: Cross multiply
    572,397.76x = 858,840.72 × 287,938.72
  4. Step 4: Simplify right side
    572,397.76x = 247,293,497,600.68
  5. Step 5: Solve for x
    x = 247,293,497,600.68/572,397.76
  6. Step 6: Final answer
    x = 432,030.86

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1.5x scale

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.