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Finding the Fourth Proportional to 520,900.67, 718,983.27 and 306,184.66

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Solution

The fourth proportional to 520,900.67, 718,983.27 and 306,184.66 is: 422,617.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,900.67 : 718,983.27 = 306,184.66 : x
  2. Step 2: Convert to fraction form
    520,900.67/718,983.27 = 306,184.66/x
  3. Step 3: Cross multiply
    520,900.67x = 718,983.27 × 306,184.66
  4. Step 4: Simplify right side
    520,900.67x = 220,141,646,273.18
  5. Step 5: Solve for x
    x = 220,141,646,273.18/520,900.67
  6. Step 6: Final answer
    x = 422,617.32

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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.