Home / 727,821.40-1,091,732.10-661,336.60

Finding the Fourth Proportional to 727,821.40, 1,091,732.10 and 661,336.60

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Solution

The fourth proportional to 727,821.40, 1,091,732.10 and 661,336.60 is: 992,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,821.40 : 1,091,732.10 = 661,336.60 : x
  2. Step 2: Convert to fraction form
    727,821.40/1,091,732.10 = 661,336.60/x
  3. Step 3: Cross multiply
    727,821.40x = 1,091,732.10 × 661,336.60
  4. Step 4: Simplify right side
    727,821.40x = 722,002,395,124.86
  5. Step 5: Solve for x
    x = 722,002,395,124.86/727,821.40
  6. Step 6: Final answer
    x = 992,004.90

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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.