Home / 680,785.20-1,021,177.80-382,186.80

Finding the Fourth Proportional to 680,785.20, 1,021,177.80 and 382,186.80

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Solution

The fourth proportional to 680,785.20, 1,021,177.80 and 382,186.80 is: 573,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,785.20 : 1,021,177.80 = 382,186.80 : x
  2. Step 2: Convert to fraction form
    680,785.20/1,021,177.80 = 382,186.80/x
  3. Step 3: Cross multiply
    680,785.20x = 1,021,177.80 × 382,186.80
  4. Step 4: Simplify right side
    680,785.20x = 390,280,675,613.04
  5. Step 5: Solve for x
    x = 390,280,675,613.04/680,785.20
  6. Step 6: Final answer
    x = 573,280.20

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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.