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Finding the Fourth Proportional to 521,844.58, 720,133.34 and 306,998.48

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Solution

The fourth proportional to 521,844.58, 720,133.34 and 306,998.48 is: 423,650.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,844.58 : 720,133.34 = 306,998.48 : x
  2. Step 2: Convert to fraction form
    521,844.58/720,133.34 = 306,998.48/x
  3. Step 3: Cross multiply
    521,844.58x = 720,133.34 × 306,998.48
  4. Step 4: Simplify right side
    521,844.58x = 221,079,840,777.32
  5. Step 5: Solve for x
    x = 221,079,840,777.32/521,844.58
  6. Step 6: Final answer
    x = 423,650.74

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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.