Home / 484,734.72-668,799.36-312,579.84

Finding the Fourth Proportional to 484,734.72, 668,799.36 and 312,579.84

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Solution

The fourth proportional to 484,734.72, 668,799.36 and 312,579.84 is: 431,273.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,734.72 : 668,799.36 = 312,579.84 : x
  2. Step 2: Convert to fraction form
    484,734.72/668,799.36 = 312,579.84/x
  3. Step 3: Cross multiply
    484,734.72x = 668,799.36 × 312,579.84
  4. Step 4: Simplify right side
    484,734.72x = 209,053,196,940.90
  5. Step 5: Solve for x
    x = 209,053,196,940.90/484,734.72
  6. Step 6: Final answer
    x = 431,273.41

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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.