Home / 578,427.20-868,677.60-420,833.60

Finding the Fourth Proportional to 578,427.20, 868,677.60 and 420,833.60

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Solution

The fourth proportional to 578,427.20, 868,677.60 and 420,833.60 is: 632,004.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,427.20 : 868,677.60 = 420,833.60 : x
  2. Step 2: Convert to fraction form
    578,427.20/868,677.60 = 420,833.60/x
  3. Step 3: Cross multiply
    578,427.20x = 868,677.60 × 420,833.60
  4. Step 4: Simplify right side
    578,427.20x = 365,568,721,647.36
  5. Step 5: Solve for x
    x = 365,568,721,647.36/578,427.20
  6. Step 6: Final answer
    x = 632,004.72

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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.