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Finding the Fourth Proportional to 693,195.20, 972,572.80 and 693,195.20

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Solution

The fourth proportional to 693,195.20, 972,572.80 and 693,195.20 is: 972,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,195.20 : 972,572.80 = 693,195.20 : x
  2. Step 2: Convert to fraction form
    693,195.20/972,572.80 = 693,195.20/x
  3. Step 3: Cross multiply
    693,195.20x = 972,572.80 × 693,195.20
  4. Step 4: Simplify right side
    693,195.20x = 674,182,796,610.56
  5. Step 5: Solve for x
    x = 674,182,796,610.56/693,195.20
  6. Step 6: Final answer
    x = 972,572.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.