Home / 976,844.40-1,465,266.60-640,921.20

Finding the Fourth Proportional to 976,844.40, 1,465,266.60 and 640,921.20

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Solution

The fourth proportional to 976,844.40, 1,465,266.60 and 640,921.20 is: 961,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,844.40 : 1,465,266.60 = 640,921.20 : x
  2. Step 2: Convert to fraction form
    976,844.40/1,465,266.60 = 640,921.20/x
  3. Step 3: Cross multiply
    976,844.40x = 1,465,266.60 × 640,921.20
  4. Step 4: Simplify right side
    976,844.40x = 939,120,427,591.92
  5. Step 5: Solve for x
    x = 939,120,427,591.92/976,844.40
  6. Step 6: Final answer
    x = 961,381.80

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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.