Home / 686,331.60-1,030,678.38-656,807.10

Finding the Fourth Proportional to 686,331.60, 1,030,678.38 and 656,807.10

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Solution

The fourth proportional to 686,331.60, 1,030,678.38 and 656,807.10 is: 986,340.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,331.60 : 1,030,678.38 = 656,807.10 : x
  2. Step 2: Convert to fraction form
    686,331.60/1,030,678.38 = 656,807.10/x
  3. Step 3: Cross multiply
    686,331.60x = 1,030,678.38 × 656,807.10
  4. Step 4: Simplify right side
    686,331.60x = 676,956,877,800.50
  5. Step 5: Solve for x
    x = 676,956,877,800.50/686,331.60
  6. Step 6: Final answer
    x = 986,340.83

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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.