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Finding the Fourth Proportional to 624,205.90, 934,724.85 and 343,405.90

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Solution

The fourth proportional to 624,205.90, 934,724.85 and 343,405.90 is: 514,237.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,205.90 : 934,724.85 = 343,405.90 : x
  2. Step 2: Convert to fraction form
    624,205.90/934,724.85 = 343,405.90/x
  3. Step 3: Cross multiply
    624,205.90x = 934,724.85 × 343,405.90
  4. Step 4: Simplify right side
    624,205.90x = 320,990,028,366.62
  5. Step 5: Solve for x
    x = 320,990,028,366.62/624,205.90
  6. Step 6: Final answer
    x = 514,237.41

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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.