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Finding the Fourth Proportional to 439,645.40, 659,468.10 and 413,401.40

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Solution

The fourth proportional to 439,645.40, 659,468.10 and 413,401.40 is: 620,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,645.40 : 659,468.10 = 413,401.40 : x
  2. Step 2: Convert to fraction form
    439,645.40/659,468.10 = 413,401.40/x
  3. Step 3: Cross multiply
    439,645.40x = 659,468.10 × 413,401.40
  4. Step 4: Simplify right side
    439,645.40x = 272,625,035,795.34
  5. Step 5: Solve for x
    x = 272,625,035,795.34/439,645.40
  6. Step 6: Final answer
    x = 620,102.10

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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.