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Finding the Fourth Proportional to 497,480.88, 686,328.36 and 306,162.12

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Solution

The fourth proportional to 497,480.88, 686,328.36 and 306,162.12 is: 422,383.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,480.88 : 686,328.36 = 306,162.12 : x
  2. Step 2: Convert to fraction form
    497,480.88/686,328.36 = 306,162.12/x
  3. Step 3: Cross multiply
    497,480.88x = 686,328.36 × 306,162.12
  4. Step 4: Simplify right side
    497,480.88x = 210,127,745,713.72
  5. Step 5: Solve for x
    x = 210,127,745,713.72/497,480.88
  6. Step 6: Final answer
    x = 422,383.56

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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.