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Finding the Fourth Proportional to 642,540.58, 963,803.93 and 263,376.79

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Solution

The fourth proportional to 642,540.58, 963,803.93 and 263,376.79 is: 395,062.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,540.58 : 963,803.93 = 263,376.79 : x
  2. Step 2: Convert to fraction form
    642,540.58/963,803.93 = 263,376.79/x
  3. Step 3: Cross multiply
    642,540.58x = 963,803.93 × 263,376.79
  4. Step 4: Simplify right side
    642,540.58x = 253,843,581,546.39
  5. Step 5: Solve for x
    x = 253,843,581,546.39/642,540.58
  6. Step 6: Final answer
    x = 395,062.34

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1.5x scale

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.