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Finding the Fourth Proportional to 460,728.12, 636,128.99 and 323,199.43

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Solution

The fourth proportional to 460,728.12, 636,128.99 and 323,199.43 is: 446,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,728.12 : 636,128.99 = 323,199.43 : x
  2. Step 2: Convert to fraction form
    460,728.12/636,128.99 = 323,199.43/x
  3. Step 3: Cross multiply
    460,728.12x = 636,128.99 × 323,199.43
  4. Step 4: Simplify right side
    460,728.12x = 205,596,526,974.48
  5. Step 5: Solve for x
    x = 205,596,526,974.48/460,728.12
  6. Step 6: Final answer
    x = 446,242.63

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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.