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Finding the Fourth Proportional to 673,178.38, 928,964.84 and 382,821.49

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Solution

The fourth proportional to 673,178.38, 928,964.84 and 382,821.49 is: 528,281.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,178.38 : 928,964.84 = 382,821.49 : x
  2. Step 2: Convert to fraction form
    673,178.38/928,964.84 = 382,821.49/x
  3. Step 3: Cross multiply
    673,178.38x = 928,964.84 × 382,821.49
  4. Step 4: Simplify right side
    673,178.38x = 355,627,704,206.41
  5. Step 5: Solve for x
    x = 355,627,704,206.41/673,178.38
  6. Step 6: Final answer
    x = 528,281.53

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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.