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Finding the Fourth Proportional to 644,813.40, 967,997.70 and 360,730.20

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Solution

The fourth proportional to 644,813.40, 967,997.70 and 360,730.20 is: 541,530.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,813.40 : 967,997.70 = 360,730.20 : x
  2. Step 2: Convert to fraction form
    644,813.40/967,997.70 = 360,730.20/x
  3. Step 3: Cross multiply
    644,813.40x = 967,997.70 × 360,730.20
  4. Step 4: Simplify right side
    644,813.40x = 349,186,003,920.54
  5. Step 5: Solve for x
    x = 349,186,003,920.54/644,813.40
  6. Step 6: Final answer
    x = 541,530.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.