Home / 480,648.15-720,909.65-125,689.55

Finding the Fourth Proportional to 480,648.15, 720,909.65 and 125,689.55

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Solution

The fourth proportional to 480,648.15, 720,909.65 and 125,689.55 is: 188,517.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,648.15 : 720,909.65 = 125,689.55 : x
  2. Step 2: Convert to fraction form
    480,648.15/720,909.65 = 125,689.55/x
  3. Step 3: Cross multiply
    480,648.15x = 720,909.65 × 125,689.55
  4. Step 4: Simplify right side
    480,648.15x = 90,610,806,208.83
  5. Step 5: Solve for x
    x = 90,610,806,208.83/480,648.15
  6. Step 6: Final answer
    x = 188,517.95

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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.