Home / 798,520.80-1,197,781.20-399,223.20

Finding the Fourth Proportional to 798,520.80, 1,197,781.20 and 399,223.20

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Solution

The fourth proportional to 798,520.80, 1,197,781.20 and 399,223.20 is: 598,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    798,520.80 : 1,197,781.20 = 399,223.20 : x
  2. Step 2: Convert to fraction form
    798,520.80/1,197,781.20 = 399,223.20/x
  3. Step 3: Cross multiply
    798,520.80x = 1,197,781.20 × 399,223.20
  4. Step 4: Simplify right side
    798,520.80x = 478,182,043,563.84
  5. Step 5: Solve for x
    x = 478,182,043,563.84/798,520.80
  6. Step 6: Final answer
    x = 598,834.80

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Double scale
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Similar ratio
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1.5x scale

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.