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Finding the Fourth Proportional to 978,855.19, 1,468,113.48 and 259,207.25

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Solution

The fourth proportional to 978,855.19, 1,468,113.48 and 259,207.25 is: 388,766.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,855.19 : 1,468,113.48 = 259,207.25 : x
  2. Step 2: Convert to fraction form
    978,855.19/1,468,113.48 = 259,207.25/x
  3. Step 3: Cross multiply
    978,855.19x = 1,468,113.48 × 259,207.25
  4. Step 4: Simplify right side
    978,855.19x = 380,545,650,498.16
  5. Step 5: Solve for x
    x = 380,545,650,498.16/978,855.19
  6. Step 6: Final answer
    x = 388,766.04

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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.