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Finding the Fourth Proportional to 475,637.18, 712,505.17 and 285,993.70

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Solution

The fourth proportional to 475,637.18, 712,505.17 and 285,993.70 is: 428,418.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,637.18 : 712,505.17 = 285,993.70 : x
  2. Step 2: Convert to fraction form
    475,637.18/712,505.17 = 285,993.70/x
  3. Step 3: Cross multiply
    475,637.18x = 712,505.17 × 285,993.70
  4. Step 4: Simplify right side
    475,637.18x = 203,771,989,837.43
  5. Step 5: Solve for x
    x = 203,771,989,837.43/475,637.18
  6. Step 6: Final answer
    x = 428,418.97

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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.