Home / 561,766,319.12-842,982,371.52-312,979,812.97

Finding the Fourth Proportional to 561,766,319.12, 842,982,371.52 and 312,979,812.97

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Solution

The fourth proportional to 561,766,319.12, 842,982,371.52 and 312,979,812.97 is: 469,655,185.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,766,319.12 : 842,982,371.52 = 312,979,812.97 : x
  2. Step 2: Convert to fraction form
    561,766,319.12/842,982,371.52 = 312,979,812.97/x
  3. Step 3: Cross multiply
    561,766,319.12x = 842,982,371.52 × 312,979,812.97
  4. Step 4: Simplify right side
    561,766,319.12x = 263,836,464,975,336,672
  5. Step 5: Solve for x
    x = 263,836,464,975,336,672/561,766,319.12
  6. Step 6: Final answer
    x = 469,655,185.79

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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.