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Finding the Fourth Proportional to 679,648.50, 937,916.01 and 377,842.50

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Solution

The fourth proportional to 679,648.50, 937,916.01 and 377,842.50 is: 521,423.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,648.50 : 937,916.01 = 377,842.50 : x
  2. Step 2: Convert to fraction form
    679,648.50/937,916.01 = 377,842.50/x
  3. Step 3: Cross multiply
    679,648.50x = 937,916.01 × 377,842.50
  4. Step 4: Simplify right side
    679,648.50x = 354,384,530,008.43
  5. Step 5: Solve for x
    x = 354,384,530,008.43/679,648.50
  6. Step 6: Final answer
    x = 521,423.25

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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.