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Finding the Fourth Proportional to 624,469.48, 861,788.76 and 382,705.34

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Solution

The fourth proportional to 624,469.48, 861,788.76 and 382,705.34 is: 528,146.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,469.48 : 861,788.76 = 382,705.34 : x
  2. Step 2: Convert to fraction form
    624,469.48/861,788.76 = 382,705.34/x
  3. Step 3: Cross multiply
    624,469.48x = 861,788.76 × 382,705.34
  4. Step 4: Simplify right side
    624,469.48x = 329,811,160,403.98
  5. Step 5: Solve for x
    x = 329,811,160,403.98/624,469.48
  6. Step 6: Final answer
    x = 528,146.16

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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.