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Finding the Fourth Proportional to 679,641.05, 937,884.82 and 373,717.11

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Solution

The fourth proportional to 679,641.05, 937,884.82 and 373,717.11 is: 515,718.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,641.05 : 937,884.82 = 373,717.11 : x
  2. Step 2: Convert to fraction form
    679,641.05/937,884.82 = 373,717.11/x
  3. Step 3: Cross multiply
    679,641.05x = 937,884.82 × 373,717.11
  4. Step 4: Simplify right side
    679,641.05x = 350,503,604,443.27
  5. Step 5: Solve for x
    x = 350,503,604,443.27/679,641.05
  6. Step 6: Final answer
    x = 515,718.71

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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.