Home / 851,430.39-1,275,700.29-513,761.49

Finding the Fourth Proportional to 851,430.39, 1,275,700.29 and 513,761.49

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Solution

The fourth proportional to 851,430.39, 1,275,700.29 and 513,761.49 is: 769,770.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,430.39 : 1,275,700.29 = 513,761.49 : x
  2. Step 2: Convert to fraction form
    851,430.39/1,275,700.29 = 513,761.49/x
  3. Step 3: Cross multiply
    851,430.39x = 1,275,700.29 × 513,761.49
  4. Step 4: Simplify right side
    851,430.39x = 655,405,681,783.83
  5. Step 5: Solve for x
    x = 655,405,681,783.83/851,430.39
  6. Step 6: Final answer
    x = 769,770.13

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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.