Home / 781,470.52-1,172,300.70-220,505.08

Finding the Fourth Proportional to 781,470.52, 1,172,300.70 and 220,505.08

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Solution

The fourth proportional to 781,470.52, 1,172,300.70 and 220,505.08 is: 330,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,470.52 : 1,172,300.70 = 220,505.08 : x
  2. Step 2: Convert to fraction form
    781,470.52/1,172,300.70 = 220,505.08/x
  3. Step 3: Cross multiply
    781,470.52x = 1,172,300.70 × 220,505.08
  4. Step 4: Simplify right side
    781,470.52x = 258,498,259,637.56
  5. Step 5: Solve for x
    x = 258,498,259,637.56/781,470.52
  6. Step 6: Final answer
    x = 330,784.40

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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.