Home / 783,211.20-1,173,067.20-643,243.20

Finding the Fourth Proportional to 783,211.20, 1,173,067.20 and 643,243.20

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Solution

The fourth proportional to 783,211.20, 1,173,067.20 and 643,243.20 is: 963,427.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,211.20 : 1,173,067.20 = 643,243.20 : x
  2. Step 2: Convert to fraction form
    783,211.20/1,173,067.20 = 643,243.20/x
  3. Step 3: Cross multiply
    783,211.20x = 1,173,067.20 × 643,243.20
  4. Step 4: Simplify right side
    783,211.20x = 754,567,499,543.04
  5. Step 5: Solve for x
    x = 754,567,499,543.04/783,211.20
  6. Step 6: Final answer
    x = 963,427.87

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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.