Home / 518,929.56-778,427.15-219,370.70

Finding the Fourth Proportional to 518,929.56, 778,427.15 and 219,370.70

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Solution

The fourth proportional to 518,929.56, 778,427.15 and 219,370.70 is: 329,069.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,929.56 : 778,427.15 = 219,370.70 : x
  2. Step 2: Convert to fraction form
    518,929.56/778,427.15 = 219,370.70/x
  3. Step 3: Cross multiply
    518,929.56x = 778,427.15 × 219,370.70
  4. Step 4: Simplify right side
    518,929.56x = 170,764,109,643.72
  5. Step 5: Solve for x
    x = 170,764,109,643.72/518,929.56
  6. Step 6: Final answer
    x = 329,069.92

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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.