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Finding the Fourth Proportional to 577,998.80, 865,769.40 and 378,933.20

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Solution

The fourth proportional to 577,998.80, 865,769.40 and 378,933.20 is: 567,594.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,998.80 : 865,769.40 = 378,933.20 : x
  2. Step 2: Convert to fraction form
    577,998.80/865,769.40 = 378,933.20/x
  3. Step 3: Cross multiply
    577,998.80x = 865,769.40 × 378,933.20
  4. Step 4: Simplify right side
    577,998.80x = 328,068,769,204.08
  5. Step 5: Solve for x
    x = 328,068,769,204.08/577,998.80
  6. Step 6: Final answer
    x = 567,594.20

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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.