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Finding the Fourth Proportional to 490,706.28, 677,688.72 and 338,141.16

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Solution

The fourth proportional to 490,706.28, 677,688.72 and 338,141.16 is: 466,989.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,706.28 : 677,688.72 = 338,141.16 : x
  2. Step 2: Convert to fraction form
    490,706.28/677,688.72 = 338,141.16/x
  3. Step 3: Cross multiply
    490,706.28x = 677,688.72 × 338,141.16
  4. Step 4: Simplify right side
    490,706.28x = 229,154,449,899.72
  5. Step 5: Solve for x
    x = 229,154,449,899.72/490,706.28
  6. Step 6: Final answer
    x = 466,989.03

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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.