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Finding the Fourth Proportional to 679,203, 937,330.94 and 377,397

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Solution

The fourth proportional to 679,203, 937,330.94 and 377,397 is: 520,824.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,203 : 937,330.94 = 377,397 : x
  2. Step 2: Convert to fraction form
    679,203/937,330.94 = 377,397/x
  3. Step 3: Cross multiply
    679,203x = 937,330.94 × 377,397
  4. Step 4: Simplify right side
    679,203x = 353,745,884,763.18
  5. Step 5: Solve for x
    x = 353,745,884,763.18/679,203
  6. Step 6: Final answer
    x = 520,824.97

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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.