Home / 819,109.24-1,229,217.48-286,634.98

Finding the Fourth Proportional to 819,109.24, 1,229,217.48 and 286,634.98

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Solution

The fourth proportional to 819,109.24, 1,229,217.48 and 286,634.98 is: 430,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,109.24 : 1,229,217.48 = 286,634.98 : x
  2. Step 2: Convert to fraction form
    819,109.24/1,229,217.48 = 286,634.98/x
  3. Step 3: Cross multiply
    819,109.24x = 1,229,217.48 × 286,634.98
  4. Step 4: Simplify right side
    819,109.24x = 352,336,727,795.45
  5. Step 5: Solve for x
    x = 352,336,727,795.45/819,109.24
  6. Step 6: Final answer
    x = 430,146.20

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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.