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Finding the Fourth Proportional to 719,680.80, 1,079,002.80 and 404,234.40

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Solution

The fourth proportional to 719,680.80, 1,079,002.80 and 404,234.40 is: 606,060.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,680.80 : 1,079,002.80 = 404,234.40 : x
  2. Step 2: Convert to fraction form
    719,680.80/1,079,002.80 = 404,234.40/x
  3. Step 3: Cross multiply
    719,680.80x = 1,079,002.80 × 404,234.40
  4. Step 4: Simplify right side
    719,680.80x = 436,170,049,456.32
  5. Step 5: Solve for x
    x = 436,170,049,456.32/719,680.80
  6. Step 6: Final answer
    x = 606,060.42

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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.