Home / 815,285.80-1,222,928.70-512,167.60

Finding the Fourth Proportional to 815,285.80, 1,222,928.70 and 512,167.60

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Solution

The fourth proportional to 815,285.80, 1,222,928.70 and 512,167.60 is: 768,251.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,285.80 : 1,222,928.70 = 512,167.60 : x
  2. Step 2: Convert to fraction form
    815,285.80/1,222,928.70 = 512,167.60/x
  3. Step 3: Cross multiply
    815,285.80x = 1,222,928.70 × 512,167.60
  4. Step 4: Simplify right side
    815,285.80x = 626,344,457,250.12
  5. Step 5: Solve for x
    x = 626,344,457,250.12/815,285.80
  6. Step 6: Final answer
    x = 768,251.40

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1.5x scale

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.