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Finding the Fourth Proportional to 399,646.30, 599,469.45 and 366,987.10

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Solution

The fourth proportional to 399,646.30, 599,469.45 and 366,987.10 is: 550,480.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,646.30 : 599,469.45 = 366,987.10 : x
  2. Step 2: Convert to fraction form
    399,646.30/599,469.45 = 366,987.10/x
  3. Step 3: Cross multiply
    399,646.30x = 599,469.45 × 366,987.10
  4. Step 4: Simplify right side
    399,646.30x = 219,997,554,994.10
  5. Step 5: Solve for x
    x = 219,997,554,994.10/399,646.30
  6. Step 6: Final answer
    x = 550,480.65

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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.