Home / 853,978.62-1,280,921.73-433,243.56

Finding the Fourth Proportional to 853,978.62, 1,280,921.73 and 433,243.56

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Solution

The fourth proportional to 853,978.62, 1,280,921.73 and 433,243.56 is: 649,841.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,978.62 : 1,280,921.73 = 433,243.56 : x
  2. Step 2: Convert to fraction form
    853,978.62/1,280,921.73 = 433,243.56/x
  3. Step 3: Cross multiply
    853,978.62x = 1,280,921.73 × 433,243.56
  4. Step 4: Simplify right side
    853,978.62x = 554,951,090,386.56
  5. Step 5: Solve for x
    x = 554,951,090,386.56/853,978.62
  6. Step 6: Final answer
    x = 649,841.90

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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.