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Finding the Fourth Proportional to 439,076.80, 657,631.05 and 360,344.80

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Solution

The fourth proportional to 439,076.80, 657,631.05 and 360,344.80 is: 539,709.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,076.80 : 657,631.05 = 360,344.80 : x
  2. Step 2: Convert to fraction form
    439,076.80/657,631.05 = 360,344.80/x
  3. Step 3: Cross multiply
    439,076.80x = 657,631.05 × 360,344.80
  4. Step 4: Simplify right side
    439,076.80x = 236,973,929,186.04
  5. Step 5: Solve for x
    x = 236,973,929,186.04/439,076.80
  6. Step 6: Final answer
    x = 539,709.52

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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.