Home / 878,756.52-1,317,660.51-398,722.37

Finding the Fourth Proportional to 878,756.52, 1,317,660.51 and 398,722.37

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Solution

The fourth proportional to 878,756.52, 1,317,660.51 and 398,722.37 is: 597,868.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,756.52 : 1,317,660.51 = 398,722.37 : x
  2. Step 2: Convert to fraction form
    878,756.52/1,317,660.51 = 398,722.37/x
  3. Step 3: Cross multiply
    878,756.52x = 1,317,660.51 × 398,722.37
  4. Step 4: Simplify right side
    878,756.52x = 525,380,721,402.61
  5. Step 5: Solve for x
    x = 525,380,721,402.61/878,756.52
  6. Step 6: Final answer
    x = 597,868.36

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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.