Home / 578,520.80-867,781.20-519,617.60

Finding the Fourth Proportional to 578,520.80, 867,781.20 and 519,617.60

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Solution

The fourth proportional to 578,520.80, 867,781.20 and 519,617.60 is: 779,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,520.80 : 867,781.20 = 519,617.60 : x
  2. Step 2: Convert to fraction form
    578,520.80/867,781.20 = 519,617.60/x
  3. Step 3: Cross multiply
    578,520.80x = 867,781.20 × 519,617.60
  4. Step 4: Simplify right side
    578,520.80x = 450,914,384,469.12
  5. Step 5: Solve for x
    x = 450,914,384,469.12/578,520.80
  6. Step 6: Final answer
    x = 779,426.40

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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.