Home / 851,430.38-1,275,700.30-513,761.49

Finding the Fourth Proportional to 851,430.38, 1,275,700.30 and 513,761.49

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Solution

The fourth proportional to 851,430.38, 1,275,700.30 and 513,761.49 is: 769,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,430.38 : 1,275,700.30 = 513,761.49 : x
  2. Step 2: Convert to fraction form
    851,430.38/1,275,700.30 = 513,761.49/x
  3. Step 3: Cross multiply
    851,430.38x = 1,275,700.30 × 513,761.49
  4. Step 4: Simplify right side
    851,430.38x = 655,405,685,637.04
  5. Step 5: Solve for x
    x = 655,405,685,637.04/851,430.38
  6. Step 6: Final answer
    x = 769,770.15

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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.