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Finding the Fourth Proportional to 927,488.08, 1,391,431.62 and 287,779

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Solution

The fourth proportional to 927,488.08, 1,391,431.62 and 287,779 is: 431,730.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,488.08 : 1,391,431.62 = 287,779 : x
  2. Step 2: Convert to fraction form
    927,488.08/1,391,431.62 = 287,779/x
  3. Step 3: Cross multiply
    927,488.08x = 1,391,431.62 × 287,779
  4. Step 4: Simplify right side
    927,488.08x = 400,424,800,171.98
  5. Step 5: Solve for x
    x = 400,424,800,171.98/927,488.08
  6. Step 6: Final answer
    x = 431,730.40

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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.