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Finding the Fourth Proportional to 630,131.20, 943,447.20 and 612,635.20

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Solution

The fourth proportional to 630,131.20, 943,447.20 and 612,635.20 is: 917,251.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,131.20 : 943,447.20 = 612,635.20 : x
  2. Step 2: Convert to fraction form
    630,131.20/943,447.20 = 612,635.20/x
  3. Step 3: Cross multiply
    630,131.20x = 943,447.20 × 612,635.20
  4. Step 4: Simplify right side
    630,131.20x = 577,988,964,061.44
  5. Step 5: Solve for x
    x = 577,988,964,061.44/630,131.20
  6. Step 6: Final answer
    x = 917,251.78

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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.