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Finding the Fourth Proportional to 808,512.90, 1,212,672.15 and 335,148.90

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Solution

The fourth proportional to 808,512.90, 1,212,672.15 and 335,148.90 is: 502,683.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,512.90 : 1,212,672.15 = 335,148.90 : x
  2. Step 2: Convert to fraction form
    808,512.90/1,212,672.15 = 335,148.90/x
  3. Step 3: Cross multiply
    808,512.90x = 1,212,672.15 × 335,148.90
  4. Step 4: Simplify right side
    808,512.90x = 406,425,737,133.14
  5. Step 5: Solve for x
    x = 406,425,737,133.14/808,512.90
  6. Step 6: Final answer
    x = 502,683.06

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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.