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Finding the Fourth Proportional to 641,519.16, 885,493.78 and 369,768.68

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Solution

The fourth proportional to 641,519.16, 885,493.78 and 369,768.68 is: 510,394.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,519.16 : 885,493.78 = 369,768.68 : x
  2. Step 2: Convert to fraction form
    641,519.16/885,493.78 = 369,768.68/x
  3. Step 3: Cross multiply
    641,519.16x = 885,493.78 × 369,768.68
  4. Step 4: Simplify right side
    641,519.16x = 327,427,866,178.81
  5. Step 5: Solve for x
    x = 327,427,866,178.81/641,519.16
  6. Step 6: Final answer
    x = 510,394.52

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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.