Home / 642,967.58-887,524.89-438,872.42

Finding the Fourth Proportional to 642,967.58, 887,524.89 and 438,872.42

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Solution

The fourth proportional to 642,967.58, 887,524.89 and 438,872.42 is: 605,800.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,967.58 : 887,524.89 = 438,872.42 : x
  2. Step 2: Convert to fraction form
    642,967.58/887,524.89 = 438,872.42/x
  3. Step 3: Cross multiply
    642,967.58x = 887,524.89 × 438,872.42
  4. Step 4: Simplify right side
    642,967.58x = 389,510,196,284.53
  5. Step 5: Solve for x
    x = 389,510,196,284.53/642,967.58
  6. Step 6: Final answer
    x = 605,800.68

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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.