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Finding the Fourth Proportional to 441,115.60, 661,673.40 and 402,408.40

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Solution

The fourth proportional to 441,115.60, 661,673.40 and 402,408.40 is: 603,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,115.60 : 661,673.40 = 402,408.40 : x
  2. Step 2: Convert to fraction form
    441,115.60/661,673.40 = 402,408.40/x
  3. Step 3: Cross multiply
    441,115.60x = 661,673.40 × 402,408.40
  4. Step 4: Simplify right side
    441,115.60x = 266,262,934,216.56
  5. Step 5: Solve for x
    x = 266,262,934,216.56/441,115.60
  6. Step 6: Final answer
    x = 603,612.60

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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.