Home / 787,515.30-1,181,272.95-433,221.30

Finding the Fourth Proportional to 787,515.30, 1,181,272.95 and 433,221.30

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Solution

The fourth proportional to 787,515.30, 1,181,272.95 and 433,221.30 is: 649,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,515.30 : 1,181,272.95 = 433,221.30 : x
  2. Step 2: Convert to fraction form
    787,515.30/1,181,272.95 = 433,221.30/x
  3. Step 3: Cross multiply
    787,515.30x = 1,181,272.95 × 433,221.30
  4. Step 4: Simplify right side
    787,515.30x = 511,752,603,053.84
  5. Step 5: Solve for x
    x = 511,752,603,053.84/787,515.30
  6. Step 6: Final answer
    x = 649,831.95

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Double scale
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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.