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Finding the Fourth Proportional to 690,344.85, 951,860.73 and 472,659.09

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Solution

The fourth proportional to 690,344.85, 951,860.73 and 472,659.09 is: 651,711.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,344.85 : 951,860.73 = 472,659.09 : x
  2. Step 2: Convert to fraction form
    690,344.85/951,860.73 = 472,659.09/x
  3. Step 3: Cross multiply
    690,344.85x = 951,860.73 × 472,659.09
  4. Step 4: Simplify right side
    690,344.85x = 449,905,626,448.54
  5. Step 5: Solve for x
    x = 449,905,626,448.54/690,344.85
  6. Step 6: Final answer
    x = 651,711.43

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Double scale
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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.