Home / 819,149.78-1,229,278.26-286,675.58

Finding the Fourth Proportional to 819,149.78, 1,229,278.26 and 286,675.58

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Solution

The fourth proportional to 819,149.78, 1,229,278.26 and 286,675.58 is: 430,207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,149.78 : 1,229,278.26 = 286,675.58 : x
  2. Step 2: Convert to fraction form
    819,149.78/1,229,278.26 = 286,675.58/x
  3. Step 3: Cross multiply
    819,149.78x = 1,229,278.26 × 286,675.58
  4. Step 4: Simplify right side
    819,149.78x = 352,404,058,166.89
  5. Step 5: Solve for x
    x = 352,404,058,166.89/819,149.78
  6. Step 6: Final answer
    x = 430,207.11

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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.