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Finding the Fourth Proportional to 624,466.92, 861,785.24 and 382,702.80

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Solution

The fourth proportional to 624,466.92, 861,785.24 and 382,702.80 is: 528,142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,466.92 : 861,785.24 = 382,702.80 : x
  2. Step 2: Convert to fraction form
    624,466.92/861,785.24 = 382,702.80/x
  3. Step 3: Cross multiply
    624,466.92x = 861,785.24 × 382,702.80
  4. Step 4: Simplify right side
    624,466.92x = 329,807,624,346.67
  5. Step 5: Solve for x
    x = 329,807,624,346.67/624,466.92
  6. Step 6: Final answer
    x = 528,142.67

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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.