Home / 386,557.47-579,276.60-266,491.17

Finding the Fourth Proportional to 386,557.47, 579,276.60 and 266,491.17

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Solution

The fourth proportional to 386,557.47, 579,276.60 and 266,491.17 is: 399,350.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,557.47 : 579,276.60 = 266,491.17 : x
  2. Step 2: Convert to fraction form
    386,557.47/579,276.60 = 266,491.17/x
  3. Step 3: Cross multiply
    386,557.47x = 579,276.60 × 266,491.17
  4. Step 4: Simplify right side
    386,557.47x = 154,372,098,887.62
  5. Step 5: Solve for x
    x = 154,372,098,887.62/386,557.47
  6. Step 6: Final answer
    x = 399,350.97

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Why These Related Problems?

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