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Finding the Fourth Proportional to 439,752.80, 659,629.20 and 299,784.80

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Solution

The fourth proportional to 439,752.80, 659,629.20 and 299,784.80 is: 449,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,752.80 : 659,629.20 = 299,784.80 : x
  2. Step 2: Convert to fraction form
    439,752.80/659,629.20 = 299,784.80/x
  3. Step 3: Cross multiply
    439,752.80x = 659,629.20 × 299,784.80
  4. Step 4: Simplify right side
    439,752.80x = 197,746,807,796.16
  5. Step 5: Solve for x
    x = 197,746,807,796.16/439,752.80
  6. Step 6: Final answer
    x = 449,677.20

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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.