Home / 678,754.60-1,018,353.33-323,722.48

Finding the Fourth Proportional to 678,754.60, 1,018,353.33 and 323,722.48

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Solution

The fourth proportional to 678,754.60, 1,018,353.33 and 323,722.48 is: 485,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,754.60 : 1,018,353.33 = 323,722.48 : x
  2. Step 2: Convert to fraction form
    678,754.60/1,018,353.33 = 323,722.48/x
  3. Step 3: Cross multiply
    678,754.60x = 1,018,353.33 × 323,722.48
  4. Step 4: Simplify right side
    678,754.60x = 329,663,865,503.86
  5. Step 5: Solve for x
    x = 329,663,865,503.86/678,754.60
  6. Step 6: Final answer
    x = 485,689.33

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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.