Home / 871,983.60-1,308,364.20-398,425.20

Finding the Fourth Proportional to 871,983.60, 1,308,364.20 and 398,425.20

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Solution

The fourth proportional to 871,983.60, 1,308,364.20 and 398,425.20 is: 597,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,983.60 : 1,308,364.20 = 398,425.20 : x
  2. Step 2: Convert to fraction form
    871,983.60/1,308,364.20 = 398,425.20/x
  3. Step 3: Cross multiply
    871,983.60x = 1,308,364.20 × 398,425.20
  4. Step 4: Simplify right side
    871,983.60x = 521,285,268,057.84
  5. Step 5: Solve for x
    x = 521,285,268,057.84/871,983.60
  6. Step 6: Final answer
    x = 597,815.45

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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.