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Finding the Fourth Proportional to 679,756.50, 938,063.97 and 377,950.50

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Solution

The fourth proportional to 679,756.50, 938,063.97 and 377,950.50 is: 521,571.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,756.50 : 938,063.97 = 377,950.50 : x
  2. Step 2: Convert to fraction form
    679,756.50/938,063.97 = 377,950.50/x
  3. Step 3: Cross multiply
    679,756.50x = 938,063.97 × 377,950.50
  4. Step 4: Simplify right side
    679,756.50x = 354,541,746,493.49
  5. Step 5: Solve for x
    x = 354,541,746,493.49/679,756.50
  6. Step 6: Final answer
    x = 521,571.69

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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.