Home / 3,115,505.60-4,672,912.80-871,870.40

Finding the Fourth Proportional to 3,115,505.60, 4,672,912.80 and 871,870.40

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Solution

The fourth proportional to 3,115,505.60, 4,672,912.80 and 871,870.40 is: 1,307,708.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115,505.60 : 4,672,912.80 = 871,870.40 : x
  2. Step 2: Convert to fraction form
    3,115,505.60/4,672,912.80 = 871,870.40/x
  3. Step 3: Cross multiply
    3,115,505.60x = 4,672,912.80 × 871,870.40
  4. Step 4: Simplify right side
    3,115,505.60x = 4,074,174,352,101.12
  5. Step 5: Solve for x
    x = 4,074,174,352,101.12/3,115,505.60
  6. Step 6: Final answer
    x = 1,307,708.88

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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.