Home / 659,887.20-988,081.20-519,919.20

Finding the Fourth Proportional to 659,887.20, 988,081.20 and 519,919.20

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Solution

The fourth proportional to 659,887.20, 988,081.20 and 519,919.20 is: 778,500.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,887.20 : 988,081.20 = 519,919.20 : x
  2. Step 2: Convert to fraction form
    659,887.20/988,081.20 = 519,919.20/x
  3. Step 3: Cross multiply
    659,887.20x = 988,081.20 × 519,919.20
  4. Step 4: Simplify right side
    659,887.20x = 513,722,387,039.04
  5. Step 5: Solve for x
    x = 513,722,387,039.04/659,887.20
  6. Step 6: Final answer
    x = 778,500.31

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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.