Home / 851,795.22-1,278,480.14-431,366.34

Finding the Fourth Proportional to 851,795.22, 1,278,480.14 and 431,366.34

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Solution

The fourth proportional to 851,795.22, 1,278,480.14 and 431,366.34 is: 647,448.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,795.22 : 1,278,480.14 = 431,366.34 : x
  2. Step 2: Convert to fraction form
    851,795.22/1,278,480.14 = 431,366.34/x
  3. Step 3: Cross multiply
    851,795.22x = 1,278,480.14 × 431,366.34
  4. Step 4: Simplify right side
    851,795.22x = 551,493,298,754.49
  5. Step 5: Solve for x
    x = 551,493,298,754.49/851,795.22
  6. Step 6: Final answer
    x = 647,448.22

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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.