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Finding the Fourth Proportional to 532,447.78, 734,778.84 and 290,725.20

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Solution

The fourth proportional to 532,447.78, 734,778.84 and 290,725.20 is: 401,201.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,447.78 : 734,778.84 = 290,725.20 : x
  2. Step 2: Convert to fraction form
    532,447.78/734,778.84 = 290,725.20/x
  3. Step 3: Cross multiply
    532,447.78x = 734,778.84 × 290,725.20
  4. Step 4: Simplify right side
    532,447.78x = 213,618,726,304.99
  5. Step 5: Solve for x
    x = 213,618,726,304.99/532,447.78
  6. Step 6: Final answer
    x = 401,201.27

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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.