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Finding the Fourth Proportional to 648,186.80, 894,138.36 and 379,862.96

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Solution

The fourth proportional to 648,186.80, 894,138.36 and 379,862.96 is: 524,000.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,186.80 : 894,138.36 = 379,862.96 : x
  2. Step 2: Convert to fraction form
    648,186.80/894,138.36 = 379,862.96/x
  3. Step 3: Cross multiply
    648,186.80x = 894,138.36 × 379,862.96
  4. Step 4: Simplify right side
    648,186.80x = 339,650,044,079.15
  5. Step 5: Solve for x
    x = 339,650,044,079.15/648,186.80
  6. Step 6: Final answer
    x = 524,000.25

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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.