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Finding the Fourth Proportional to 624,506.46, 861,835.71 and 379,407.77

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Solution

The fourth proportional to 624,506.46, 861,835.71 and 379,407.77 is: 523,592.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,506.46 : 861,835.71 = 379,407.77 : x
  2. Step 2: Convert to fraction form
    624,506.46/861,835.71 = 379,407.77/x
  3. Step 3: Cross multiply
    624,506.46x = 861,835.71 × 379,407.77
  4. Step 4: Simplify right side
    624,506.46x = 326,987,166,992.06
  5. Step 5: Solve for x
    x = 326,987,166,992.06/624,506.46
  6. Step 6: Final answer
    x = 523,592.93

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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.