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Finding the Fourth Proportional to 679,758.50, 938,066.73 and 377,952.50

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Solution

The fourth proportional to 679,758.50, 938,066.73 and 377,952.50 is: 521,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,758.50 : 938,066.73 = 377,952.50 : x
  2. Step 2: Convert to fraction form
    679,758.50/938,066.73 = 377,952.50/x
  3. Step 3: Cross multiply
    679,758.50x = 938,066.73 × 377,952.50
  4. Step 4: Simplify right side
    679,758.50x = 354,544,665,770.33
  5. Step 5: Solve for x
    x = 354,544,665,770.33/679,758.50
  6. Step 6: Final answer
    x = 521,574.45

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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.