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Finding the Fourth Proportional to 463,434.62, 639,486.92 and 259,457.18

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Solution

The fourth proportional to 463,434.62, 639,486.92 and 259,457.18 is: 358,021.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,434.62 : 639,486.92 = 259,457.18 : x
  2. Step 2: Convert to fraction form
    463,434.62/639,486.92 = 259,457.18/x
  3. Step 3: Cross multiply
    463,434.62x = 639,486.92 × 259,457.18
  4. Step 4: Simplify right side
    463,434.62x = 165,919,471,612.80
  5. Step 5: Solve for x
    x = 165,919,471,612.80/463,434.62
  6. Step 6: Final answer
    x = 358,021.31

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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.