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Finding the Fourth Proportional to 624,188.40, 934,698.60 and 343,388.40

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Solution

The fourth proportional to 624,188.40, 934,698.60 and 343,388.40 is: 514,211.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,188.40 : 934,698.60 = 343,388.40 : x
  2. Step 2: Convert to fraction form
    624,188.40/934,698.60 = 343,388.40/x
  3. Step 3: Cross multiply
    624,188.40x = 934,698.60 × 343,388.40
  4. Step 4: Simplify right side
    624,188.40x = 320,964,656,736.24
  5. Step 5: Solve for x
    x = 320,964,656,736.24/624,188.40
  6. Step 6: Final answer
    x = 514,211.18

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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.