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Finding the Fourth Proportional to 448,521.73, 672,782.60 and 307,853.89

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Solution

The fourth proportional to 448,521.73, 672,782.60 and 307,853.89 is: 461,780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,521.73 : 672,782.60 = 307,853.89 : x
  2. Step 2: Convert to fraction form
    448,521.73/672,782.60 = 307,853.89/x
  3. Step 3: Cross multiply
    448,521.73x = 672,782.60 × 307,853.89
  4. Step 4: Simplify right side
    448,521.73x = 207,118,735,631.13
  5. Step 5: Solve for x
    x = 207,118,735,631.13/448,521.73
  6. Step 6: Final answer
    x = 461,780.83

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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.