Home / 918,425.48-1,377,640.38-287,340.44

Finding the Fourth Proportional to 918,425.48, 1,377,640.38 and 287,340.44

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Solution

The fourth proportional to 918,425.48, 1,377,640.38 and 287,340.44 is: 431,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,425.48 : 1,377,640.38 = 287,340.44 : x
  2. Step 2: Convert to fraction form
    918,425.48/1,377,640.38 = 287,340.44/x
  3. Step 3: Cross multiply
    918,425.48x = 1,377,640.38 × 287,340.44
  4. Step 4: Simplify right side
    918,425.48x = 395,851,792,950.97
  5. Step 5: Solve for x
    x = 395,851,792,950.97/918,425.48
  6. Step 6: Final answer
    x = 431,011.34

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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.