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Finding the Fourth Proportional to 700,714.29, 960,679.05 and 687,945.20

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Solution

The fourth proportional to 700,714.29, 960,679.05 and 687,945.20 is: 943,172.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,714.29 : 960,679.05 = 687,945.20 : x
  2. Step 2: Convert to fraction form
    700,714.29/960,679.05 = 687,945.20/x
  3. Step 3: Cross multiply
    700,714.29x = 960,679.05 × 687,945.20
  4. Step 4: Simplify right side
    700,714.29x = 660,894,537,136.49
  5. Step 5: Solve for x
    x = 660,894,537,136.49/700,714.29
  6. Step 6: Final answer
    x = 943,172.63

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.