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Finding the Fourth Proportional to 695,659.60, 976,722.80 and 695,659.60

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Solution

The fourth proportional to 695,659.60, 976,722.80 and 695,659.60 is: 976,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,659.60 : 976,722.80 = 695,659.60 : x
  2. Step 2: Convert to fraction form
    695,659.60/976,722.80 = 695,659.60/x
  3. Step 3: Cross multiply
    695,659.60x = 976,722.80 × 695,659.60
  4. Step 4: Simplify right side
    695,659.60x = 679,466,592,358.88
  5. Step 5: Solve for x
    x = 679,466,592,358.88/695,659.60
  6. Step 6: Final answer
    x = 976,722.80

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.