Home / 784,987.20-1,177,480.80-726,667.20

Finding the Fourth Proportional to 784,987.20, 1,177,480.80 and 726,667.20

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Solution

The fourth proportional to 784,987.20, 1,177,480.80 and 726,667.20 is: 1,090,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,987.20 : 1,177,480.80 = 726,667.20 : x
  2. Step 2: Convert to fraction form
    784,987.20/1,177,480.80 = 726,667.20/x
  3. Step 3: Cross multiply
    784,987.20x = 1,177,480.80 × 726,667.20
  4. Step 4: Simplify right side
    784,987.20x = 855,636,675,989.76
  5. Step 5: Solve for x
    x = 855,636,675,989.76/784,987.20
  6. Step 6: Final answer
    x = 1,090,000.80

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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.