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Finding the Fourth Proportional to 624,038.90, 936,461.55 and 343,757.30

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Solution

The fourth proportional to 624,038.90, 936,461.55 and 343,757.30 is: 515,858.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,038.90 : 936,461.55 = 343,757.30 : x
  2. Step 2: Convert to fraction form
    624,038.90/936,461.55 = 343,757.30/x
  3. Step 3: Cross multiply
    624,038.90x = 936,461.55 × 343,757.30
  4. Step 4: Simplify right side
    624,038.90x = 321,915,493,981.82
  5. Step 5: Solve for x
    x = 321,915,493,981.82/624,038.90
  6. Step 6: Final answer
    x = 515,858.06

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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.