Home / 859,618.20-1,289,427.30-219,920.70

Finding the Fourth Proportional to 859,618.20, 1,289,427.30 and 219,920.70

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Solution

The fourth proportional to 859,618.20, 1,289,427.30 and 219,920.70 is: 329,881.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,618.20 : 1,289,427.30 = 219,920.70 : x
  2. Step 2: Convert to fraction form
    859,618.20/1,289,427.30 = 219,920.70/x
  3. Step 3: Cross multiply
    859,618.20x = 1,289,427.30 × 219,920.70
  4. Step 4: Simplify right side
    859,618.20x = 283,571,754,415.11
  5. Step 5: Solve for x
    x = 283,571,754,415.11/859,618.20
  6. Step 6: Final answer
    x = 329,881.05

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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.