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Finding the Fourth Proportional to 786,002.10, 1,179,003.15 and 728,265.30

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Solution

The fourth proportional to 786,002.10, 1,179,003.15 and 728,265.30 is: 1,092,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,002.10 : 1,179,003.15 = 728,265.30 : x
  2. Step 2: Convert to fraction form
    786,002.10/1,179,003.15 = 728,265.30/x
  3. Step 3: Cross multiply
    786,002.10x = 1,179,003.15 × 728,265.30
  4. Step 4: Simplify right side
    786,002.10x = 858,627,082,735.70
  5. Step 5: Solve for x
    x = 858,627,082,735.70/786,002.10
  6. Step 6: Final answer
    x = 1,092,397.95

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Double scale
Find fourth proportional to 786,003.10, 1,179,004.65 and 728,266.30
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.