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Finding the Fourth Proportional to 695,121.90, 970,808.70 and 695,121.90

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Solution

The fourth proportional to 695,121.90, 970,808.70 and 695,121.90 is: 970,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,121.90 : 970,808.70 = 695,121.90 : x
  2. Step 2: Convert to fraction form
    695,121.90/970,808.70 = 695,121.90/x
  3. Step 3: Cross multiply
    695,121.90x = 970,808.70 × 695,121.90
  4. Step 4: Simplify right side
    695,121.90x = 674,830,388,080.53
  5. Step 5: Solve for x
    x = 674,830,388,080.53/695,121.90
  6. Step 6: Final answer
    x = 970,808.70

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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.