Home / 876,816.60-1,315,743.30-639,562.20

Finding the Fourth Proportional to 876,816.60, 1,315,743.30 and 639,562.20

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Solution

The fourth proportional to 876,816.60, 1,315,743.30 and 639,562.20 is: 959,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,816.60 : 1,315,743.30 = 639,562.20 : x
  2. Step 2: Convert to fraction form
    876,816.60/1,315,743.30 = 639,562.20/x
  3. Step 3: Cross multiply
    876,816.60x = 1,315,743.30 × 639,562.20
  4. Step 4: Simplify right side
    876,816.60x = 841,499,679,583.26
  5. Step 5: Solve for x
    x = 841,499,679,583.26/876,816.60
  6. Step 6: Final answer
    x = 959,721.43

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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.