Home / 878,691.51-1,317,563.28-398,657.34

Finding the Fourth Proportional to 878,691.51, 1,317,563.28 and 398,657.34

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Solution

The fourth proportional to 878,691.51, 1,317,563.28 and 398,657.34 is: 597,770.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,691.51 : 1,317,563.28 = 398,657.34 : x
  2. Step 2: Convert to fraction form
    878,691.51/1,317,563.28 = 398,657.34/x
  3. Step 3: Cross multiply
    878,691.51x = 1,317,563.28 × 398,657.34
  4. Step 4: Simplify right side
    878,691.51x = 525,256,272,486.48
  5. Step 5: Solve for x
    x = 525,256,272,486.48/878,691.51
  6. Step 6: Final answer
    x = 597,770.97

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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.