Home / 876,297.60-1,314,964.80-639,043.20

Finding the Fourth Proportional to 876,297.60, 1,314,964.80 and 639,043.20

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Solution

The fourth proportional to 876,297.60, 1,314,964.80 and 639,043.20 is: 958,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,297.60 : 1,314,964.80 = 639,043.20 : x
  2. Step 2: Convert to fraction form
    876,297.60/1,314,964.80 = 639,043.20/x
  3. Step 3: Cross multiply
    876,297.60x = 1,314,964.80 × 639,043.20
  4. Step 4: Simplify right side
    876,297.60x = 840,319,313,679.36
  5. Step 5: Solve for x
    x = 840,319,313,679.36/876,297.60
  6. Step 6: Final answer
    x = 958,942.85

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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.