Home / 1,242,545.88-1,861,383-643,899.72

Finding the Fourth Proportional to 1,242,545.88, 1,861,383 and 643,899.72

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Solution

The fourth proportional to 1,242,545.88, 1,861,383 and 643,899.72 is: 964,587.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,545.88 : 1,861,383 = 643,899.72 : x
  2. Step 2: Convert to fraction form
    1,242,545.88/1,861,383 = 643,899.72/x
  3. Step 3: Cross multiply
    1,242,545.88x = 1,861,383 × 643,899.72
  4. Step 4: Simplify right side
    1,242,545.88x = 1,198,543,992,512.76
  5. Step 5: Solve for x
    x = 1,198,543,992,512.76/1,242,545.88
  6. Step 6: Final answer
    x = 964,587.31

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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.