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Finding the Fourth Proportional to 641,765.73, 885,601.58 and 351,321.12

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Solution

The fourth proportional to 641,765.73, 885,601.58 and 351,321.12 is: 484,803.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,765.73 : 885,601.58 = 351,321.12 : x
  2. Step 2: Convert to fraction form
    641,765.73/885,601.58 = 351,321.12/x
  3. Step 3: Cross multiply
    641,765.73x = 885,601.58 × 351,321.12
  4. Step 4: Simplify right side
    641,765.73x = 311,130,538,959.37
  5. Step 5: Solve for x
    x = 311,130,538,959.37/641,765.73
  6. Step 6: Final answer
    x = 484,803.92

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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.