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Finding the Fourth Proportional to 945,400, 1,304,656.08 and 515,689.44

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Solution

The fourth proportional to 945,400, 1,304,656.08 and 515,689.44 is: 711,653.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,400 : 1,304,656.08 = 515,689.44 : x
  2. Step 2: Convert to fraction form
    945,400/1,304,656.08 = 515,689.44/x
  3. Step 3: Cross multiply
    945,400x = 1,304,656.08 × 515,689.44
  4. Step 4: Simplify right side
    945,400x = 672,797,363,287.80
  5. Step 5: Solve for x
    x = 672,797,363,287.80/945,400
  6. Step 6: Final answer
    x = 711,653.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.