Home / 821,242.80-1,230,827.40-727,930.80

Finding the Fourth Proportional to 821,242.80, 1,230,827.40 and 727,930.80

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Solution

The fourth proportional to 821,242.80, 1,230,827.40 and 727,930.80 is: 1,090,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,242.80 : 1,230,827.40 = 727,930.80 : x
  2. Step 2: Convert to fraction form
    821,242.80/1,230,827.40 = 727,930.80/x
  3. Step 3: Cross multiply
    821,242.80x = 1,230,827.40 × 727,930.80
  4. Step 4: Simplify right side
    821,242.80x = 895,957,173,943.92
  5. Step 5: Solve for x
    x = 895,957,173,943.92/821,242.80
  6. Step 6: Final answer
    x = 1,090,977.20

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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.