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Finding the Fourth Proportional to 679,642.50, 937,907.73 and 377,836.50

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Solution

The fourth proportional to 679,642.50, 937,907.73 and 377,836.50 is: 521,414.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,642.50 : 937,907.73 = 377,836.50 : x
  2. Step 2: Convert to fraction form
    679,642.50/937,907.73 = 377,836.50/x
  3. Step 3: Cross multiply
    679,642.50x = 937,907.73 × 377,836.50
  4. Step 4: Simplify right side
    679,642.50x = 354,375,774,026.15
  5. Step 5: Solve for x
    x = 354,375,774,026.15/679,642.50
  6. Step 6: Final answer
    x = 521,414.97

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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.