Home / 678,423.20-1,017,662.47-172,997.28

Finding the Fourth Proportional to 678,423.20, 1,017,662.47 and 172,997.28

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Solution

The fourth proportional to 678,423.20, 1,017,662.47 and 172,997.28 is: 259,502.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,423.20 : 1,017,662.47 = 172,997.28 : x
  2. Step 2: Convert to fraction form
    678,423.20/1,017,662.47 = 172,997.28/x
  3. Step 3: Cross multiply
    678,423.20x = 1,017,662.47 × 172,997.28
  4. Step 4: Simplify right side
    678,423.20x = 176,052,838,835.59
  5. Step 5: Solve for x
    x = 176,052,838,835.59/678,423.20
  6. Step 6: Final answer
    x = 259,502.98

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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.