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Finding the Fourth Proportional to 609,609.78, 914,976 and 310,304.25

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Solution

The fourth proportional to 609,609.78, 914,976 and 310,304.25 is: 465,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,609.78 : 914,976 = 310,304.25 : x
  2. Step 2: Convert to fraction form
    609,609.78/914,976 = 310,304.25/x
  3. Step 3: Cross multiply
    609,609.78x = 914,976 × 310,304.25
  4. Step 4: Simplify right side
    609,609.78x = 283,920,941,448
  5. Step 5: Solve for x
    x = 283,920,941,448/609,609.78
  6. Step 6: Final answer
    x = 465,742.10

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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.