Home / 1,091,212.60-1,640,318.10-777,839.80

Finding the Fourth Proportional to 1,091,212.60, 1,640,318.10 and 777,839.80

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Solution

The fourth proportional to 1,091,212.60, 1,640,318.10 and 777,839.80 is: 1,169,254.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,212.60 : 1,640,318.10 = 777,839.80 : x
  2. Step 2: Convert to fraction form
    1,091,212.60/1,640,318.10 = 777,839.80/x
  3. Step 3: Cross multiply
    1,091,212.60x = 1,640,318.10 × 777,839.80
  4. Step 4: Simplify right side
    1,091,212.60x = 1,275,904,702,840.38
  5. Step 5: Solve for x
    x = 1,275,904,702,840.38/1,091,212.60
  6. Step 6: Final answer
    x = 1,169,254.00

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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.