Home / 1,285,392.30-1,928,358.09-386,899.80

Finding the Fourth Proportional to 1,285,392.30, 1,928,358.09 and 386,899.80

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Solution

The fourth proportional to 1,285,392.30, 1,928,358.09 and 386,899.80 is: 580,430.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,392.30 : 1,928,358.09 = 386,899.80 : x
  2. Step 2: Convert to fraction form
    1,285,392.30/1,928,358.09 = 386,899.80/x
  3. Step 3: Cross multiply
    1,285,392.30x = 1,928,358.09 × 386,899.80
  4. Step 4: Simplify right side
    1,285,392.30x = 746,081,359,349.38
  5. Step 5: Solve for x
    x = 746,081,359,349.38/1,285,392.30
  6. Step 6: Final answer
    x = 580,430.86

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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.