Home / 871,712.20-1,308,029.10-398,470.60

Finding the Fourth Proportional to 871,712.20, 1,308,029.10 and 398,470.60

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Solution

The fourth proportional to 871,712.20, 1,308,029.10 and 398,470.60 is: 597,916.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,712.20 : 1,308,029.10 = 398,470.60 : x
  2. Step 2: Convert to fraction form
    871,712.20/1,308,029.10 = 398,470.60/x
  3. Step 3: Cross multiply
    871,712.20x = 1,308,029.10 × 398,470.60
  4. Step 4: Simplify right side
    871,712.20x = 521,211,140,294.46
  5. Step 5: Solve for x
    x = 521,211,140,294.46/871,712.20
  6. Step 6: Final answer
    x = 597,916.54

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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.