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Finding the Fourth Proportional to 439,655.20, 659,871.60 and 376,669.60

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Solution

The fourth proportional to 439,655.20, 659,871.60 and 376,669.60 is: 565,337.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,655.20 : 659,871.60 = 376,669.60 : x
  2. Step 2: Convert to fraction form
    439,655.20/659,871.60 = 376,669.60/x
  3. Step 3: Cross multiply
    439,655.20x = 659,871.60 × 376,669.60
  4. Step 4: Simplify right side
    439,655.20x = 248,553,571,623.36
  5. Step 5: Solve for x
    x = 248,553,571,623.36/439,655.20
  6. Step 6: Final answer
    x = 565,337.50

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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.