Home / 878,610.83-1,318,359.87-398,532.69

Finding the Fourth Proportional to 878,610.83, 1,318,359.87 and 398,532.69

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Solution

The fourth proportional to 878,610.83, 1,318,359.87 and 398,532.69 is: 598,000.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,610.83 : 1,318,359.87 = 398,532.69 : x
  2. Step 2: Convert to fraction form
    878,610.83/1,318,359.87 = 398,532.69/x
  3. Step 3: Cross multiply
    878,610.83x = 1,318,359.87 × 398,532.69
  4. Step 4: Simplify right side
    878,610.83x = 525,409,505,379.15
  5. Step 5: Solve for x
    x = 525,409,505,379.15/878,610.83
  6. Step 6: Final answer
    x = 598,000.26

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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.