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Finding the Fourth Proportional to 532,559.78, 799,236.42 and 390,771.44

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Solution

The fourth proportional to 532,559.78, 799,236.42 and 390,771.44 is: 586,448.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,559.78 : 799,236.42 = 390,771.44 : x
  2. Step 2: Convert to fraction form
    532,559.78/799,236.42 = 390,771.44/x
  3. Step 3: Cross multiply
    532,559.78x = 799,236.42 × 390,771.44
  4. Step 4: Simplify right side
    532,559.78x = 312,318,766,743.85
  5. Step 5: Solve for x
    x = 312,318,766,743.85/532,559.78
  6. Step 6: Final answer
    x = 586,448.28

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Similar ratio
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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.