Home / 1,318,912.40-1,977,335.08-520,791.32

Finding the Fourth Proportional to 1,318,912.40, 1,977,335.08 and 520,791.32

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Solution

The fourth proportional to 1,318,912.40, 1,977,335.08 and 520,791.32 is: 780,778.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,912.40 : 1,977,335.08 = 520,791.32 : x
  2. Step 2: Convert to fraction form
    1,318,912.40/1,977,335.08 = 520,791.32/x
  3. Step 3: Cross multiply
    1,318,912.40x = 1,977,335.08 × 520,791.32
  4. Step 4: Simplify right side
    1,318,912.40x = 1,029,778,950,036.87
  5. Step 5: Solve for x
    x = 1,029,778,950,036.87/1,318,912.40
  6. Step 6: Final answer
    x = 780,778.88

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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.