Home / 987,785.28-1,363,144.32-535,078.08

Finding the Fourth Proportional to 987,785.28, 1,363,144.32 and 535,078.08

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Solution

The fourth proportional to 987,785.28, 1,363,144.32 and 535,078.08 is: 738,408.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,785.28 : 1,363,144.32 = 535,078.08 : x
  2. Step 2: Convert to fraction form
    987,785.28/1,363,144.32 = 535,078.08/x
  3. Step 3: Cross multiply
    987,785.28x = 1,363,144.32 × 535,078.08
  4. Step 4: Simplify right side
    987,785.28x = 729,388,645,508.51
  5. Step 5: Solve for x
    x = 729,388,645,508.51/987,785.28
  6. Step 6: Final answer
    x = 738,408.09

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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.