Home / 722,781.80-1,083,740.70-442,500.20

Finding the Fourth Proportional to 722,781.80, 1,083,740.70 and 442,500.20

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Solution

The fourth proportional to 722,781.80, 1,083,740.70 and 442,500.20 is: 663,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,781.80 : 1,083,740.70 = 442,500.20 : x
  2. Step 2: Convert to fraction form
    722,781.80/1,083,740.70 = 442,500.20/x
  3. Step 3: Cross multiply
    722,781.80x = 1,083,740.70 × 442,500.20
  4. Step 4: Simplify right side
    722,781.80x = 479,555,476,498.14
  5. Step 5: Solve for x
    x = 479,555,476,498.14/722,781.80
  6. Step 6: Final answer
    x = 663,485.82

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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.