Home / 878,390.56-1,212,178.86-475,982.56

Finding the Fourth Proportional to 878,390.56, 1,212,178.86 and 475,982.56

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Solution

The fourth proportional to 878,390.56, 1,212,178.86 and 475,982.56 is: 656,855.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,390.56 : 1,212,178.86 = 475,982.56 : x
  2. Step 2: Convert to fraction form
    878,390.56/1,212,178.86 = 475,982.56/x
  3. Step 3: Cross multiply
    878,390.56x = 1,212,178.86 × 475,982.56
  4. Step 4: Simplify right side
    878,390.56x = 576,975,996,960.68
  5. Step 5: Solve for x
    x = 576,975,996,960.68/878,390.56
  6. Step 6: Final answer
    x = 656,855.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.