Home / 876,839.76-1,314,482.04-427,309.20

Finding the Fourth Proportional to 876,839.76, 1,314,482.04 and 427,309.20

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Solution

The fourth proportional to 876,839.76, 1,314,482.04 and 427,309.20 is: 640,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,839.76 : 1,314,482.04 = 427,309.20 : x
  2. Step 2: Convert to fraction form
    876,839.76/1,314,482.04 = 427,309.20/x
  3. Step 3: Cross multiply
    876,839.76x = 1,314,482.04 × 427,309.20
  4. Step 4: Simplify right side
    876,839.76x = 561,690,268,926.77
  5. Step 5: Solve for x
    x = 561,690,268,926.77/876,839.76
  6. Step 6: Final answer
    x = 640,584.85

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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.