Home / 642,841.11-887,128.81-370,965.42

Finding the Fourth Proportional to 642,841.11, 887,128.81 and 370,965.42

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Solution

The fourth proportional to 642,841.11, 887,128.81 and 370,965.42 is: 511,936.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,841.11 : 887,128.81 = 370,965.42 : x
  2. Step 2: Convert to fraction form
    642,841.11/887,128.81 = 370,965.42/x
  3. Step 3: Cross multiply
    642,841.11x = 887,128.81 × 370,965.42
  4. Step 4: Simplify right side
    642,841.11x = 329,094,110,668.34
  5. Step 5: Solve for x
    x = 329,094,110,668.34/642,841.11
  6. Step 6: Final answer
    x = 511,936.94

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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.