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Finding the Fourth Proportional to 679,838.44, 938,203.82 and 373,943.30

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Solution

The fourth proportional to 679,838.44, 938,203.82 and 373,943.30 is: 516,056.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,838.44 : 938,203.82 = 373,943.30 : x
  2. Step 2: Convert to fraction form
    679,838.44/938,203.82 = 373,943.30/x
  3. Step 3: Cross multiply
    679,838.44x = 938,203.82 × 373,943.30
  4. Step 4: Simplify right side
    679,838.44x = 350,835,032,523.41
  5. Step 5: Solve for x
    x = 350,835,032,523.41/679,838.44
  6. Step 6: Final answer
    x = 516,056.48

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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.