Home / 1,285,836.52-1,928,769.42-486,901.12

Finding the Fourth Proportional to 1,285,836.52, 1,928,769.42 and 486,901.12

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Solution

The fourth proportional to 1,285,836.52, 1,928,769.42 and 486,901.12 is: 730,357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,836.52 : 1,928,769.42 = 486,901.12 : x
  2. Step 2: Convert to fraction form
    1,285,836.52/1,928,769.42 = 486,901.12/x
  3. Step 3: Cross multiply
    1,285,836.52x = 1,928,769.42 × 486,901.12
  4. Step 4: Simplify right side
    1,285,836.52x = 939,119,990,819.75
  5. Step 5: Solve for x
    x = 939,119,990,819.75/1,285,836.52
  6. Step 6: Final answer
    x = 730,357.22

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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.