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Finding the Fourth Proportional to 689,955.42, 951,734.92 and 448,398.88

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Solution

The fourth proportional to 689,955.42, 951,734.92 and 448,398.88 is: 618,528.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,955.42 : 951,734.92 = 448,398.88 : x
  2. Step 2: Convert to fraction form
    689,955.42/951,734.92 = 448,398.88/x
  3. Step 3: Cross multiply
    689,955.42x = 951,734.92 × 448,398.88
  4. Step 4: Simplify right side
    689,955.42x = 426,756,869,942.90
  5. Step 5: Solve for x
    x = 426,756,869,942.90/689,955.42
  6. Step 6: Final answer
    x = 618,528.18

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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.