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Finding the Fourth Proportional to 619,678.08, 854,673.66 and 448,239.15

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Solution

The fourth proportional to 619,678.08, 854,673.66 and 448,239.15 is: 618,221.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,678.08 : 854,673.66 = 448,239.15 : x
  2. Step 2: Convert to fraction form
    619,678.08/854,673.66 = 448,239.15/x
  3. Step 3: Cross multiply
    619,678.08x = 854,673.66 × 448,239.15
  4. Step 4: Simplify right side
    619,678.08x = 383,098,194,885.79
  5. Step 5: Solve for x
    x = 383,098,194,885.79/619,678.08
  6. Step 6: Final answer
    x = 618,221.31

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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.