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Finding the Fourth Proportional to 623,908.61, 860,993.89 and 337,428.70

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Solution

The fourth proportional to 623,908.61, 860,993.89 and 337,428.70 is: 465,651.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,908.61 : 860,993.89 = 337,428.70 : x
  2. Step 2: Convert to fraction form
    623,908.61/860,993.89 = 337,428.70/x
  3. Step 3: Cross multiply
    623,908.61x = 860,993.89 × 337,428.70
  4. Step 4: Simplify right side
    623,908.61x = 290,524,048,167.07
  5. Step 5: Solve for x
    x = 290,524,048,167.07/623,908.61
  6. Step 6: Final answer
    x = 465,651.61

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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.