Home / 687,429.36-1,031,010.48-345,781.80

Finding the Fourth Proportional to 687,429.36, 1,031,010.48 and 345,781.80

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Solution

The fourth proportional to 687,429.36, 1,031,010.48 and 345,781.80 is: 518,605.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,429.36 : 1,031,010.48 = 345,781.80 : x
  2. Step 2: Convert to fraction form
    687,429.36/1,031,010.48 = 345,781.80/x
  3. Step 3: Cross multiply
    687,429.36x = 1,031,010.48 × 345,781.80
  4. Step 4: Simplify right side
    687,429.36x = 356,504,659,593.26
  5. Step 5: Solve for x
    x = 356,504,659,593.26/687,429.36
  6. Step 6: Final answer
    x = 518,605.52

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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.