Home / 722,780.80-1,083,739.20-442,499.20

Finding the Fourth Proportional to 722,780.80, 1,083,739.20 and 442,499.20

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Solution

The fourth proportional to 722,780.80, 1,083,739.20 and 442,499.20 is: 663,484.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,780.80 : 1,083,739.20 = 442,499.20 : x
  2. Step 2: Convert to fraction form
    722,780.80/1,083,739.20 = 442,499.20/x
  3. Step 3: Cross multiply
    722,780.80x = 1,083,739.20 × 442,499.20
  4. Step 4: Simplify right side
    722,780.80x = 479,553,729,008.64
  5. Step 5: Solve for x
    x = 479,553,729,008.64/722,780.80
  6. Step 6: Final answer
    x = 663,484.32

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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.