Home / 805,228.12-1,207,091.31-272,378.35

Finding the Fourth Proportional to 805,228.12, 1,207,091.31 and 272,378.35

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Solution

The fourth proportional to 805,228.12, 1,207,091.31 and 272,378.35 is: 408,313.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,228.12 : 1,207,091.31 = 272,378.35 : x
  2. Step 2: Convert to fraction form
    805,228.12/1,207,091.31 = 272,378.35/x
  3. Step 3: Cross multiply
    805,228.12x = 1,207,091.31 × 272,378.35
  4. Step 4: Simplify right side
    805,228.12x = 328,785,539,317.14
  5. Step 5: Solve for x
    x = 328,785,539,317.14/805,228.12
  6. Step 6: Final answer
    x = 408,313.53

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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.