Home / 763,721.60-1,145,236.80-342,780.80

Finding the Fourth Proportional to 763,721.60, 1,145,236.80 and 342,780.80

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Solution

The fourth proportional to 763,721.60, 1,145,236.80 and 342,780.80 is: 514,016.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,721.60 : 1,145,236.80 = 342,780.80 : x
  2. Step 2: Convert to fraction form
    763,721.60/1,145,236.80 = 342,780.80/x
  3. Step 3: Cross multiply
    763,721.60x = 1,145,236.80 × 342,780.80
  4. Step 4: Simplify right side
    763,721.60x = 392,565,186,493.44
  5. Step 5: Solve for x
    x = 392,565,186,493.44/763,721.60
  6. Step 6: Final answer
    x = 514,016.08

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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.