Home / 851,775.21-1,278,450.14-431,346.33

Finding the Fourth Proportional to 851,775.21, 1,278,450.14 and 431,346.33

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Solution

The fourth proportional to 851,775.21, 1,278,450.14 and 431,346.33 is: 647,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,775.21 : 1,278,450.14 = 431,346.33 : x
  2. Step 2: Convert to fraction form
    851,775.21/1,278,450.14 = 431,346.33/x
  3. Step 3: Cross multiply
    851,775.21x = 1,278,450.14 × 431,346.33
  4. Step 4: Simplify right side
    851,775.21x = 551,454,773,820.26
  5. Step 5: Solve for x
    x = 551,454,773,820.26/851,775.21
  6. Step 6: Final answer
    x = 647,418.20

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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.