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Finding the Fourth Proportional to 536,589.12, 740,331.50 and 321,650.76

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Solution

The fourth proportional to 536,589.12, 740,331.50 and 321,650.76 is: 443,781.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,589.12 : 740,331.50 = 321,650.76 : x
  2. Step 2: Convert to fraction form
    536,589.12/740,331.50 = 321,650.76/x
  3. Step 3: Cross multiply
    536,589.12x = 740,331.50 × 321,650.76
  4. Step 4: Simplify right side
    536,589.12x = 238,128,189,626.94
  5. Step 5: Solve for x
    x = 238,128,189,626.94/536,589.12
  6. Step 6: Final answer
    x = 443,781.25

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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.