Home / 887,527.20-1,331,290.80-509,613.60

Finding the Fourth Proportional to 887,527.20, 1,331,290.80 and 509,613.60

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Solution

The fourth proportional to 887,527.20, 1,331,290.80 and 509,613.60 is: 764,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,527.20 : 1,331,290.80 = 509,613.60 : x
  2. Step 2: Convert to fraction form
    887,527.20/1,331,290.80 = 509,613.60/x
  3. Step 3: Cross multiply
    887,527.20x = 1,331,290.80 × 509,613.60
  4. Step 4: Simplify right side
    887,527.20x = 678,443,897,234.88
  5. Step 5: Solve for x
    x = 678,443,897,234.88/887,527.20
  6. Step 6: Final answer
    x = 764,420.40

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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.