Home / 918,605.80-1,377,951.90-287,540.20

Finding the Fourth Proportional to 918,605.80, 1,377,951.90 and 287,540.20

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Solution

The fourth proportional to 918,605.80, 1,377,951.90 and 287,540.20 is: 431,323.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,605.80 : 1,377,951.90 = 287,540.20 : x
  2. Step 2: Convert to fraction form
    918,605.80/1,377,951.90 = 287,540.20/x
  3. Step 3: Cross multiply
    918,605.80x = 1,377,951.90 × 287,540.20
  4. Step 4: Simplify right side
    918,605.80x = 396,216,564,916.38
  5. Step 5: Solve for x
    x = 396,216,564,916.38/918,605.80
  6. Step 6: Final answer
    x = 431,323.82

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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.