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Finding the Fourth Proportional to 644,818.40, 968,005.20 and 360,735.20

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Solution

The fourth proportional to 644,818.40, 968,005.20 and 360,735.20 is: 541,537.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,818.40 : 968,005.20 = 360,735.20 : x
  2. Step 2: Convert to fraction form
    644,818.40/968,005.20 = 360,735.20/x
  3. Step 3: Cross multiply
    644,818.40x = 968,005.20 × 360,735.20
  4. Step 4: Simplify right side
    644,818.40x = 349,193,549,423.04
  5. Step 5: Solve for x
    x = 349,193,549,423.04/644,818.40
  6. Step 6: Final answer
    x = 541,537.82

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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.