Home / 878,352.64-1,212,062.92-485,869

Finding the Fourth Proportional to 878,352.64, 1,212,062.92 and 485,869

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Solution

The fourth proportional to 878,352.64, 1,212,062.92 and 485,869 is: 670,463.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,352.64 : 1,212,062.92 = 485,869 : x
  2. Step 2: Convert to fraction form
    878,352.64/1,212,062.92 = 485,869/x
  3. Step 3: Cross multiply
    878,352.64x = 1,212,062.92 × 485,869
  4. Step 4: Simplify right side
    878,352.64x = 588,903,798,877.48
  5. Step 5: Solve for x
    x = 588,903,798,877.48/878,352.64
  6. Step 6: Final answer
    x = 670,463.97

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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.