Home / 858,784.20-1,288,176.30-498,585.30

Finding the Fourth Proportional to 858,784.20, 1,288,176.30 and 498,585.30

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Solution

The fourth proportional to 858,784.20, 1,288,176.30 and 498,585.30 is: 747,877.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,784.20 : 1,288,176.30 = 498,585.30 : x
  2. Step 2: Convert to fraction form
    858,784.20/1,288,176.30 = 498,585.30/x
  3. Step 3: Cross multiply
    858,784.20x = 1,288,176.30 × 498,585.30
  4. Step 4: Simplify right side
    858,784.20x = 642,265,766,988.39
  5. Step 5: Solve for x
    x = 642,265,766,988.39/858,784.20
  6. Step 6: Final answer
    x = 747,877.95

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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.