Home / 778,540.80-1,165,478.40-462,835.20

Finding the Fourth Proportional to 778,540.80, 1,165,478.40 and 462,835.20

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Solution

The fourth proportional to 778,540.80, 1,165,478.40 and 462,835.20 is: 692,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,540.80 : 1,165,478.40 = 462,835.20 : x
  2. Step 2: Convert to fraction form
    778,540.80/1,165,478.40 = 462,835.20/x
  3. Step 3: Cross multiply
    778,540.80x = 1,165,478.40 × 462,835.20
  4. Step 4: Simplify right side
    778,540.80x = 539,424,428,359.68
  5. Step 5: Solve for x
    x = 539,424,428,359.68/778,540.80
  6. Step 6: Final answer
    x = 692,865.97

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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.