Home / 876,999.40-1,315,844.70-344,429.80

Finding the Fourth Proportional to 876,999.40, 1,315,844.70 and 344,429.80

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Solution

The fourth proportional to 876,999.40, 1,315,844.70 and 344,429.80 is: 516,780.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,999.40 : 1,315,844.70 = 344,429.80 : x
  2. Step 2: Convert to fraction form
    876,999.40/1,315,844.70 = 344,429.80/x
  3. Step 3: Cross multiply
    876,999.40x = 1,315,844.70 × 344,429.80
  4. Step 4: Simplify right side
    876,999.40x = 453,216,126,852.06
  5. Step 5: Solve for x
    x = 453,216,126,852.06/876,999.40
  6. Step 6: Final answer
    x = 516,780.43

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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.