Home / 1,217,539.20-1,826,308.80-318,979.20

Finding the Fourth Proportional to 1,217,539.20, 1,826,308.80 and 318,979.20

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Solution

The fourth proportional to 1,217,539.20, 1,826,308.80 and 318,979.20 is: 478,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,539.20 : 1,826,308.80 = 318,979.20 : x
  2. Step 2: Convert to fraction form
    1,217,539.20/1,826,308.80 = 318,979.20/x
  3. Step 3: Cross multiply
    1,217,539.20x = 1,826,308.80 × 318,979.20
  4. Step 4: Simplify right side
    1,217,539.20x = 582,554,519,976.96
  5. Step 5: Solve for x
    x = 582,554,519,976.96/1,217,539.20
  6. Step 6: Final answer
    x = 478,468.80

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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.