Home / 987,653.20-1,481,479.80-388,633.90

Finding the Fourth Proportional to 987,653.20, 1,481,479.80 and 388,633.90

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Solution

The fourth proportional to 987,653.20, 1,481,479.80 and 388,633.90 is: 582,950.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,653.20 : 1,481,479.80 = 388,633.90 : x
  2. Step 2: Convert to fraction form
    987,653.20/1,481,479.80 = 388,633.90/x
  3. Step 3: Cross multiply
    987,653.20x = 1,481,479.80 × 388,633.90
  4. Step 4: Simplify right side
    987,653.20x = 575,753,272,445.22
  5. Step 5: Solve for x
    x = 575,753,272,445.22/987,653.20
  6. Step 6: Final answer
    x = 582,950.85

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Similar ratio
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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.