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Finding the Fourth Proportional to 7,129,270.70, 10,693,906.05 and 4,294,918.70

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Solution

The fourth proportional to 7,129,270.70, 10,693,906.05 and 4,294,918.70 is: 6,442,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129,270.70 : 10,693,906.05 = 4,294,918.70 : x
  2. Step 2: Convert to fraction form
    7,129,270.70/10,693,906.05 = 4,294,918.70/x
  3. Step 3: Cross multiply
    7,129,270.70x = 10,693,906.05 × 4,294,918.70
  4. Step 4: Simplify right side
    7,129,270.70x = 45,929,457,070,188.14
  5. Step 5: Solve for x
    x = 45,929,457,070,188.14/7,129,270.70
  6. Step 6: Final answer
    x = 6,442,378.05

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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.