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Finding the Fourth Proportional to 708,589,985.70, 1,062,884,978.55 and 663,240,353.70

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Solution

The fourth proportional to 708,589,985.70, 1,062,884,978.55 and 663,240,353.70 is: 994,860,530.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,589,985.70 : 1,062,884,978.55 = 663,240,353.70 : x
  2. Step 2: Convert to fraction form
    708,589,985.70/1,062,884,978.55 = 663,240,353.70/x
  3. Step 3: Cross multiply
    708,589,985.70x = 1,062,884,978.55 × 663,240,353.70
  4. Step 4: Simplify right side
    708,589,985.70x = 704,948,209,115,918,976
  5. Step 5: Solve for x
    x = 704,948,209,115,918,976/708,589,985.70
  6. Step 6: Final answer
    x = 994,860,530.55

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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.