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Finding the Fourth Proportional to 679,215.85, 937,338.95 and 373,286.68

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Solution

The fourth proportional to 679,215.85, 937,338.95 and 373,286.68 is: 515,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,215.85 : 937,338.95 = 373,286.68 : x
  2. Step 2: Convert to fraction form
    679,215.85/937,338.95 = 373,286.68/x
  3. Step 3: Cross multiply
    679,215.85x = 937,338.95 × 373,286.68
  4. Step 4: Simplify right side
    679,215.85x = 349,896,143,270.06
  5. Step 5: Solve for x
    x = 349,896,143,270.06/679,215.85
  6. Step 6: Final answer
    x = 515,147.20

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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.