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Finding the Fourth Proportional to 6,652,257.60, 9,978,386.40 and 5,217,366.90

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Solution

The fourth proportional to 6,652,257.60, 9,978,386.40 and 5,217,366.90 is: 7,826,050.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,257.60 : 9,978,386.40 = 5,217,366.90 : x
  2. Step 2: Convert to fraction form
    6,652,257.60/9,978,386.40 = 5,217,366.90/x
  3. Step 3: Cross multiply
    6,652,257.60x = 9,978,386.40 × 5,217,366.90
  4. Step 4: Simplify right side
    6,652,257.60x = 52,060,902,918,770.16
  5. Step 5: Solve for x
    x = 52,060,902,918,770.16/6,652,257.60
  6. Step 6: Final answer
    x = 7,826,050.35

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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.