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Finding the Fourth Proportional to 679,064.71, 937,054.45 and 392,603.24

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Solution

The fourth proportional to 679,064.71, 937,054.45 and 392,603.24 is: 541,760.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,064.71 : 937,054.45 = 392,603.24 : x
  2. Step 2: Convert to fraction form
    679,064.71/937,054.45 = 392,603.24/x
  3. Step 3: Cross multiply
    679,064.71x = 937,054.45 × 392,603.24
  4. Step 4: Simplify right side
    679,064.71x = 367,890,614,487.55
  5. Step 5: Solve for x
    x = 367,890,614,487.55/679,064.71
  6. Step 6: Final answer
    x = 541,760.76

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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.