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Finding the Fourth Proportional to 641,728.67, 885,596.02 and 351,335.34

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Solution

The fourth proportional to 641,728.67, 885,596.02 and 351,335.34 is: 484,848.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,728.67 : 885,596.02 = 351,335.34 : x
  2. Step 2: Convert to fraction form
    641,728.67/885,596.02 = 351,335.34/x
  3. Step 3: Cross multiply
    641,728.67x = 885,596.02 × 351,335.34
  4. Step 4: Simplify right side
    641,728.67x = 311,141,177,911.01
  5. Step 5: Solve for x
    x = 311,141,177,911.01/641,728.67
  6. Step 6: Final answer
    x = 484,848.50

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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.