Home / 419,384.10-578,670.55-266,447.19

Finding the Fourth Proportional to 419,384.10, 578,670.55 and 266,447.19

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Solution

The fourth proportional to 419,384.10, 578,670.55 and 266,447.19 is: 367,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,384.10 : 578,670.55 = 266,447.19 : x
  2. Step 2: Convert to fraction form
    419,384.10/578,670.55 = 266,447.19/x
  3. Step 3: Cross multiply
    419,384.10x = 578,670.55 × 266,447.19
  4. Step 4: Simplify right side
    419,384.10x = 154,185,143,487.15
  5. Step 5: Solve for x
    x = 154,185,143,487.15/419,384.10
  6. Step 6: Final answer
    x = 367,646.61

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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.