Home / 1,290,932.20-1,781,549.52-717,960.07

Finding the Fourth Proportional to 1,290,932.20, 1,781,549.52 and 717,960.07

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Solution

The fourth proportional to 1,290,932.20, 1,781,549.52 and 717,960.07 is: 990,819.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,932.20 : 1,781,549.52 = 717,960.07 : x
  2. Step 2: Convert to fraction form
    1,290,932.20/1,781,549.52 = 717,960.07/x
  3. Step 3: Cross multiply
    1,290,932.20x = 1,781,549.52 × 717,960.07
  4. Step 4: Simplify right side
    1,290,932.20x = 1,279,081,409,179.92
  5. Step 5: Solve for x
    x = 1,279,081,409,179.92/1,290,932.20
  6. Step 6: Final answer
    x = 990,819.98

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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.