Home / 427,006.74-640,521.38-186,997.17

Finding the Fourth Proportional to 427,006.74, 640,521.38 and 186,997.17

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Solution

The fourth proportional to 427,006.74, 640,521.38 and 186,997.17 is: 280,500.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,006.74 : 640,521.38 = 186,997.17 : x
  2. Step 2: Convert to fraction form
    427,006.74/640,521.38 = 186,997.17/x
  3. Step 3: Cross multiply
    427,006.74x = 640,521.38 × 186,997.17
  4. Step 4: Simplify right side
    427,006.74x = 119,775,684,449.51
  5. Step 5: Solve for x
    x = 119,775,684,449.51/427,006.74
  6. Step 6: Final answer
    x = 280,500.69

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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.