Home / 815,899.80-1,223,374.50-316,680.60

Finding the Fourth Proportional to 815,899.80, 1,223,374.50 and 316,680.60

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Solution

The fourth proportional to 815,899.80, 1,223,374.50 and 316,680.60 is: 474,836.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,899.80 : 1,223,374.50 = 316,680.60 : x
  2. Step 2: Convert to fraction form
    815,899.80/1,223,374.50 = 316,680.60/x
  3. Step 3: Cross multiply
    815,899.80x = 1,223,374.50 × 316,680.60
  4. Step 4: Simplify right side
    815,899.80x = 387,418,970,684.70
  5. Step 5: Solve for x
    x = 387,418,970,684.70/815,899.80
  6. Step 6: Final answer
    x = 474,836.46

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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.