Home / 756,117.40-1,132,863.90-638,019.40

Finding the Fourth Proportional to 756,117.40, 1,132,863.90 and 638,019.40

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Solution

The fourth proportional to 756,117.40, 1,132,863.90 and 638,019.40 is: 955,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,117.40 : 1,132,863.90 = 638,019.40 : x
  2. Step 2: Convert to fraction form
    756,117.40/1,132,863.90 = 638,019.40/x
  3. Step 3: Cross multiply
    756,117.40x = 1,132,863.90 × 638,019.40
  4. Step 4: Simplify right side
    756,117.40x = 722,789,145,759.66
  5. Step 5: Solve for x
    x = 722,789,145,759.66/756,117.40
  6. Step 6: Final answer
    x = 955,921.85

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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.