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Finding the Fourth Proportional to 689,634.54, 951,155.64 and 471,972.24

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Solution

The fourth proportional to 689,634.54, 951,155.64 and 471,972.24 is: 650,952.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,634.54 : 951,155.64 = 471,972.24 : x
  2. Step 2: Convert to fraction form
    689,634.54/951,155.64 = 471,972.24/x
  3. Step 3: Cross multiply
    689,634.54x = 951,155.64 × 471,972.24
  4. Step 4: Simplify right side
    689,634.54x = 448,919,057,999.43
  5. Step 5: Solve for x
    x = 448,919,057,999.43/689,634.54
  6. Step 6: Final answer
    x = 650,952.11

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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.