Home / 642,811.96-887,066.34-356,329.56

Finding the Fourth Proportional to 642,811.96, 887,066.34 and 356,329.56

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Solution

The fourth proportional to 642,811.96, 887,066.34 and 356,329.56 is: 491,726.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,811.96 : 887,066.34 = 356,329.56 : x
  2. Step 2: Convert to fraction form
    642,811.96/887,066.34 = 356,329.56/x
  3. Step 3: Cross multiply
    642,811.96x = 887,066.34 × 356,329.56
  4. Step 4: Simplify right side
    642,811.96x = 316,087,958,623.01
  5. Step 5: Solve for x
    x = 316,087,958,623.01/642,811.96
  6. Step 6: Final answer
    x = 491,726.94

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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.