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Finding the Fourth Proportional to 575,789.50, 794,589.51 and 321,140.89

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Solution

The fourth proportional to 575,789.50, 794,589.51 and 321,140.89 is: 443,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,789.50 : 794,589.51 = 321,140.89 : x
  2. Step 2: Convert to fraction form
    575,789.50/794,589.51 = 321,140.89/x
  3. Step 3: Cross multiply
    575,789.50x = 794,589.51 × 321,140.89
  4. Step 4: Simplify right side
    575,789.50x = 255,175,182,426.06
  5. Step 5: Solve for x
    x = 255,175,182,426.06/575,789.50
  6. Step 6: Final answer
    x = 443,174.43

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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.