Home / 853,638.47-1,280,293.41-398,104.66

Finding the Fourth Proportional to 853,638.47, 1,280,293.41 and 398,104.66

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Solution

The fourth proportional to 853,638.47, 1,280,293.41 and 398,104.66 is: 597,080.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,638.47 : 1,280,293.41 = 398,104.66 : x
  2. Step 2: Convert to fraction form
    853,638.47/1,280,293.41 = 398,104.66/x
  3. Step 3: Cross multiply
    853,638.47x = 1,280,293.41 × 398,104.66
  4. Step 4: Simplify right side
    853,638.47x = 509,690,772,688.29
  5. Step 5: Solve for x
    x = 509,690,772,688.29/853,638.47
  6. Step 6: Final answer
    x = 597,080.37

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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.