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Finding the Fourth Proportional to 577,998.60, 866,997.90 and 365,422.20

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Solution

The fourth proportional to 577,998.60, 866,997.90 and 365,422.20 is: 548,133.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,998.60 : 866,997.90 = 365,422.20 : x
  2. Step 2: Convert to fraction form
    577,998.60/866,997.90 = 365,422.20/x
  3. Step 3: Cross multiply
    577,998.60x = 866,997.90 × 365,422.20
  4. Step 4: Simplify right side
    577,998.60x = 316,820,280,013.38
  5. Step 5: Solve for x
    x = 316,820,280,013.38/577,998.60
  6. Step 6: Final answer
    x = 548,133.30

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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.