Home / 624,624.21-861,981.69-338,144.29

Finding the Fourth Proportional to 624,624.21, 861,981.69 and 338,144.29

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Solution

The fourth proportional to 624,624.21, 861,981.69 and 338,144.29 is: 466,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,624.21 : 861,981.69 = 338,144.29 : x
  2. Step 2: Convert to fraction form
    624,624.21/861,981.69 = 338,144.29/x
  3. Step 3: Cross multiply
    624,624.21x = 861,981.69 × 338,144.29
  4. Step 4: Simplify right side
    624,624.21x = 291,474,186,558.05
  5. Step 5: Solve for x
    x = 291,474,186,558.05/624,624.21
  6. Step 6: Final answer
    x = 466,639.28

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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.