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Finding the Fourth Proportional to 679,105, 937,194.06 and 377,299

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Solution

The fourth proportional to 679,105, 937,194.06 and 377,299 is: 520,688.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,105 : 937,194.06 = 377,299 : x
  2. Step 2: Convert to fraction form
    679,105/937,194.06 = 377,299/x
  3. Step 3: Cross multiply
    679,105x = 937,194.06 × 377,299
  4. Step 4: Simplify right side
    679,105x = 353,602,381,643.94
  5. Step 5: Solve for x
    x = 353,602,381,643.94/679,105
  6. Step 6: Final answer
    x = 520,688.82

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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.