Home / 687,279.96-1,030,505.76-308,132.06

Finding the Fourth Proportional to 687,279.96, 1,030,505.76 and 308,132.06

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Solution

The fourth proportional to 687,279.96, 1,030,505.76 and 308,132.06 is: 462,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,279.96 : 1,030,505.76 = 308,132.06 : x
  2. Step 2: Convert to fraction form
    687,279.96/1,030,505.76 = 308,132.06/x
  3. Step 3: Cross multiply
    687,279.96x = 1,030,505.76 × 308,132.06
  4. Step 4: Simplify right side
    687,279.96x = 317,531,857,518.14
  5. Step 5: Solve for x
    x = 317,531,857,518.14/687,279.96
  6. Step 6: Final answer
    x = 462,012.39

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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.