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Finding the Fourth Proportional to 852,992.80, 1,278,874.80 and 479,130.40

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Solution

The fourth proportional to 852,992.80, 1,278,874.80 and 479,130.40 is: 718,350.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,992.80 : 1,278,874.80 = 479,130.40 : x
  2. Step 2: Convert to fraction form
    852,992.80/1,278,874.80 = 479,130.40/x
  3. Step 3: Cross multiply
    852,992.80x = 1,278,874.80 × 479,130.40
  4. Step 4: Simplify right side
    852,992.80x = 612,747,794,473.92
  5. Step 5: Solve for x
    x = 612,747,794,473.92/852,992.80
  6. Step 6: Final answer
    x = 718,350.49

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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.