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Finding the Fourth Proportional to 624,701.88, 862,087.34 and 338,222.20

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Solution

The fourth proportional to 624,701.88, 862,087.34 and 338,222.20 is: 466,745.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,701.88 : 862,087.34 = 338,222.20 : x
  2. Step 2: Convert to fraction form
    624,701.88/862,087.34 = 338,222.20/x
  3. Step 3: Cross multiply
    624,701.88x = 862,087.34 × 338,222.20
  4. Step 4: Simplify right side
    624,701.88x = 291,577,076,726.95
  5. Step 5: Solve for x
    x = 291,577,076,726.95/624,701.88
  6. Step 6: Final answer
    x = 466,745.96

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1.5x scale

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.