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Finding the Fourth Proportional to 572,794.50, 790,456.47 and 318,169.38

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Solution

The fourth proportional to 572,794.50, 790,456.47 and 318,169.38 is: 439,073.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,794.50 : 790,456.47 = 318,169.38 : x
  2. Step 2: Convert to fraction form
    572,794.50/790,456.47 = 318,169.38/x
  3. Step 3: Cross multiply
    572,794.50x = 790,456.47 × 318,169.38
  4. Step 4: Simplify right side
    572,794.50x = 251,499,044,976.89
  5. Step 5: Solve for x
    x = 251,499,044,976.89/572,794.50
  6. Step 6: Final answer
    x = 439,073.78

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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.