Home / 712,760.16-1,069,140.24-665,520.96

Finding the Fourth Proportional to 712,760.16, 1,069,140.24 and 665,520.96

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Solution

The fourth proportional to 712,760.16, 1,069,140.24 and 665,520.96 is: 998,281.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,760.16 : 1,069,140.24 = 665,520.96 : x
  2. Step 2: Convert to fraction form
    712,760.16/1,069,140.24 = 665,520.96/x
  3. Step 3: Cross multiply
    712,760.16x = 1,069,140.24 × 665,520.96
  4. Step 4: Simplify right side
    712,760.16x = 711,535,238,899.43
  5. Step 5: Solve for x
    x = 711,535,238,899.43/712,760.16
  6. Step 6: Final answer
    x = 998,281.44

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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.