Home / 987,905.40-1,363,372.40-605,880.24

Finding the Fourth Proportional to 987,905.40, 1,363,372.40 and 605,880.24

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Solution

The fourth proportional to 987,905.40, 1,363,372.40 and 605,880.24 is: 836,153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,905.40 : 1,363,372.40 = 605,880.24 : x
  2. Step 2: Convert to fraction form
    987,905.40/1,363,372.40 = 605,880.24/x
  3. Step 3: Cross multiply
    987,905.40x = 1,363,372.40 × 605,880.24
  4. Step 4: Simplify right side
    987,905.40x = 826,040,396,921.38
  5. Step 5: Solve for x
    x = 826,040,396,921.38/987,905.40
  6. Step 6: Final answer
    x = 836,153.34

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Double scale
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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.