Home / 1,078,287.80-1,617,154.80-319,949.90

Finding the Fourth Proportional to 1,078,287.80, 1,617,154.80 and 319,949.90

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Solution

The fourth proportional to 1,078,287.80, 1,617,154.80 and 319,949.90 is: 479,842.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,287.80 : 1,617,154.80 = 319,949.90 : x
  2. Step 2: Convert to fraction form
    1,078,287.80/1,617,154.80 = 319,949.90/x
  3. Step 3: Cross multiply
    1,078,287.80x = 1,617,154.80 × 319,949.90
  4. Step 4: Simplify right side
    1,078,287.80x = 517,408,516,544.52
  5. Step 5: Solve for x
    x = 517,408,516,544.52/1,078,287.80
  6. Step 6: Final answer
    x = 479,842.69

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1.5x scale

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.