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Finding the Fourth Proportional to 448,520.49, 672,780.71 and 307,852.65

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Solution

The fourth proportional to 448,520.49, 672,780.71 and 307,852.65 is: 461,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,520.49 : 672,780.71 = 307,852.65 : x
  2. Step 2: Convert to fraction form
    448,520.49/672,780.71 = 307,852.65/x
  3. Step 3: Cross multiply
    448,520.49x = 672,780.71 × 307,852.65
  4. Step 4: Simplify right side
    448,520.49x = 207,117,325,212.01
  5. Step 5: Solve for x
    x = 207,117,325,212.01/448,520.49
  6. Step 6: Final answer
    x = 461,778.96

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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.