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Finding the Fourth Proportional to 552,279.53, 762,140.96 and 310,556.95

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Solution

The fourth proportional to 552,279.53, 762,140.96 and 310,556.95 is: 428,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,279.53 : 762,140.96 = 310,556.95 : x
  2. Step 2: Convert to fraction form
    552,279.53/762,140.96 = 310,556.95/x
  3. Step 3: Cross multiply
    552,279.53x = 762,140.96 × 310,556.95
  4. Step 4: Simplify right side
    552,279.53x = 236,688,175,748.05
  5. Step 5: Solve for x
    x = 236,688,175,748.05/552,279.53
  6. Step 6: Final answer
    x = 428,565.90

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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.