Home / 911,243.40-1,366,865.10-821,041.80

Finding the Fourth Proportional to 911,243.40, 1,366,865.10 and 821,041.80

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Solution

The fourth proportional to 911,243.40, 1,366,865.10 and 821,041.80 is: 1,231,562.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,243.40 : 1,366,865.10 = 821,041.80 : x
  2. Step 2: Convert to fraction form
    911,243.40/1,366,865.10 = 821,041.80/x
  3. Step 3: Cross multiply
    911,243.40x = 1,366,865.10 × 821,041.80
  4. Step 4: Simplify right side
    911,243.40x = 1,122,253,382,061.18
  5. Step 5: Solve for x
    x = 1,122,253,382,061.18/911,243.40
  6. Step 6: Final answer
    x = 1,231,562.70

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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.