Home / 687,788.70-1,029,933.45-656,295.90

Finding the Fourth Proportional to 687,788.70, 1,029,933.45 and 656,295.90

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Solution

The fourth proportional to 687,788.70, 1,029,933.45 and 656,295.90 is: 982,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,788.70 : 1,029,933.45 = 656,295.90 : x
  2. Step 2: Convert to fraction form
    687,788.70/1,029,933.45 = 656,295.90/x
  3. Step 3: Cross multiply
    687,788.70x = 1,029,933.45 × 656,295.90
  4. Step 4: Simplify right side
    687,788.70x = 675,941,100,507.86
  5. Step 5: Solve for x
    x = 675,941,100,507.86/687,788.70
  6. Step 6: Final answer
    x = 982,774.36

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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.