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Finding the Fourth Proportional to 624,700.90, 862,086.18 and 338,221

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Solution

The fourth proportional to 624,700.90, 862,086.18 and 338,221 is: 466,744.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,700.90 : 862,086.18 = 338,221 : x
  2. Step 2: Convert to fraction form
    624,700.90/862,086.18 = 338,221/x
  3. Step 3: Cross multiply
    624,700.90x = 862,086.18 × 338,221
  4. Step 4: Simplify right side
    624,700.90x = 291,575,649,885.78
  5. Step 5: Solve for x
    x = 291,575,649,885.78/624,700.90
  6. Step 6: Final answer
    x = 466,744.41

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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.