Home / 518,979.80-778,907.10-235,107.20

Finding the Fourth Proportional to 518,979.80, 778,907.10 and 235,107.20

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Solution

The fourth proportional to 518,979.80, 778,907.10 and 235,107.20 is: 352,858.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,979.80 : 778,907.10 = 235,107.20 : x
  2. Step 2: Convert to fraction form
    518,979.80/778,907.10 = 235,107.20/x
  3. Step 3: Cross multiply
    518,979.80x = 778,907.10 × 235,107.20
  4. Step 4: Simplify right side
    518,979.80x = 183,126,667,341.12
  5. Step 5: Solve for x
    x = 183,126,667,341.12/518,979.80
  6. Step 6: Final answer
    x = 352,858.95

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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.