Home / 1,312,540.31-1,811,306.85-708,928.31

Finding the Fourth Proportional to 1,312,540.31, 1,811,306.85 and 708,928.31

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Solution

The fourth proportional to 1,312,540.31, 1,811,306.85 and 708,928.31 is: 978,321.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,540.31 : 1,811,306.85 = 708,928.31 : x
  2. Step 2: Convert to fraction form
    1,312,540.31/1,811,306.85 = 708,928.31/x
  3. Step 3: Cross multiply
    1,312,540.31x = 1,811,306.85 × 708,928.31
  4. Step 4: Simplify right side
    1,312,540.31x = 1,284,086,705,931.71
  5. Step 5: Solve for x
    x = 1,284,086,705,931.71/1,312,540.31
  6. Step 6: Final answer
    x = 978,321.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.