Home / 725,078.60-1,087,617.90-192,681.80

Finding the Fourth Proportional to 725,078.60, 1,087,617.90 and 192,681.80

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Solution

The fourth proportional to 725,078.60, 1,087,617.90 and 192,681.80 is: 289,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,078.60 : 1,087,617.90 = 192,681.80 : x
  2. Step 2: Convert to fraction form
    725,078.60/1,087,617.90 = 192,681.80/x
  3. Step 3: Cross multiply
    725,078.60x = 1,087,617.90 × 192,681.80
  4. Step 4: Simplify right side
    725,078.60x = 209,564,174,684.22
  5. Step 5: Solve for x
    x = 209,564,174,684.22/725,078.60
  6. Step 6: Final answer
    x = 289,022.70

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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.