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Finding the Fourth Proportional to 578,001.80, 865,773.90 and 378,936.20

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Solution

The fourth proportional to 578,001.80, 865,773.90 and 378,936.20 is: 567,598.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,001.80 : 865,773.90 = 378,936.20 : x
  2. Step 2: Convert to fraction form
    578,001.80/865,773.90 = 378,936.20/x
  3. Step 3: Cross multiply
    578,001.80x = 865,773.90 × 378,936.20
  4. Step 4: Simplify right side
    578,001.80x = 328,073,071,725.18
  5. Step 5: Solve for x
    x = 328,073,071,725.18/578,001.80
  6. Step 6: Final answer
    x = 567,598.70

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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.