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Finding the Fourth Proportional to 648,875.80, 895,388.34 and 419,438.44

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Solution

The fourth proportional to 648,875.80, 895,388.34 and 419,438.44 is: 578,786.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,875.80 : 895,388.34 = 419,438.44 : x
  2. Step 2: Convert to fraction form
    648,875.80/895,388.34 = 419,438.44/x
  3. Step 3: Cross multiply
    648,875.80x = 895,388.34 × 419,438.44
  4. Step 4: Simplify right side
    648,875.80x = 375,560,288,523.79
  5. Step 5: Solve for x
    x = 375,560,288,523.79/648,875.80
  6. Step 6: Final answer
    x = 578,786.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.