Home / 918,634.80-1,377,995.40-287,569.20

Finding the Fourth Proportional to 918,634.80, 1,377,995.40 and 287,569.20

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Solution

The fourth proportional to 918,634.80, 1,377,995.40 and 287,569.20 is: 431,367.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,634.80 : 1,377,995.40 = 287,569.20 : x
  2. Step 2: Convert to fraction form
    918,634.80/1,377,995.40 = 287,569.20/x
  3. Step 3: Cross multiply
    918,634.80x = 1,377,995.40 × 287,569.20
  4. Step 4: Simplify right side
    918,634.80x = 396,269,034,781.68
  5. Step 5: Solve for x
    x = 396,269,034,781.68/918,634.80
  6. Step 6: Final answer
    x = 431,367.32

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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.