Home / 686,330.60-1,030,676.88-656,806.10

Finding the Fourth Proportional to 686,330.60, 1,030,676.88 and 656,806.10

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Solution

The fourth proportional to 686,330.60, 1,030,676.88 and 656,806.10 is: 986,339.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,330.60 : 1,030,676.88 = 656,806.10 : x
  2. Step 2: Convert to fraction form
    686,330.60/1,030,676.88 = 656,806.10/x
  3. Step 3: Cross multiply
    686,330.60x = 1,030,676.88 × 656,806.10
  4. Step 4: Simplify right side
    686,330.60x = 676,954,861,912.97
  5. Step 5: Solve for x
    x = 676,954,861,912.97/686,330.60
  6. Step 6: Final answer
    x = 986,339.33

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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.