Home / 813,057.66-1,218,935.25-386,379.36

Finding the Fourth Proportional to 813,057.66, 1,218,935.25 and 386,379.36

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Solution

The fourth proportional to 813,057.66, 1,218,935.25 and 386,379.36 is: 579,259.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,057.66 : 1,218,935.25 = 386,379.36 : x
  2. Step 2: Convert to fraction form
    813,057.66/1,218,935.25 = 386,379.36/x
  3. Step 3: Cross multiply
    813,057.66x = 1,218,935.25 × 386,379.36
  4. Step 4: Simplify right side
    813,057.66x = 470,971,421,776.44
  5. Step 5: Solve for x
    x = 470,971,421,776.44/813,057.66
  6. Step 6: Final answer
    x = 579,259.56

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.