Home / 1,191,353.10-1,787,029.65-687,468.30

Finding the Fourth Proportional to 1,191,353.10, 1,787,029.65 and 687,468.30

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Solution

The fourth proportional to 1,191,353.10, 1,787,029.65 and 687,468.30 is: 1,031,202.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,353.10 : 1,787,029.65 = 687,468.30 : x
  2. Step 2: Convert to fraction form
    1,191,353.10/1,787,029.65 = 687,468.30/x
  3. Step 3: Cross multiply
    1,191,353.10x = 1,787,029.65 × 687,468.30
  4. Step 4: Simplify right side
    1,191,353.10x = 1,228,526,235,535.10
  5. Step 5: Solve for x
    x = 1,228,526,235,535.10/1,191,353.10
  6. Step 6: Final answer
    x = 1,031,202.45

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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.