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Finding the Fourth Proportional to 572,997.11, 790,760.61 and 318,348.30

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Solution

The fourth proportional to 572,997.11, 790,760.61 and 318,348.30 is: 439,334.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,997.11 : 790,760.61 = 318,348.30 : x
  2. Step 2: Convert to fraction form
    572,997.11/790,760.61 = 318,348.30/x
  3. Step 3: Cross multiply
    572,997.11x = 790,760.61 × 318,348.30
  4. Step 4: Simplify right side
    572,997.11x = 251,737,295,900.46
  5. Step 5: Solve for x
    x = 251,737,295,900.46/572,997.11
  6. Step 6: Final answer
    x = 439,334.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.