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Finding the Fourth Proportional to 640,524.71, 883,833.78 and 364,889.81

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Solution

The fourth proportional to 640,524.71, 883,833.78 and 364,889.81 is: 503,496.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,524.71 : 883,833.78 = 364,889.81 : x
  2. Step 2: Convert to fraction form
    640,524.71/883,833.78 = 364,889.81/x
  3. Step 3: Cross multiply
    640,524.71x = 883,833.78 × 364,889.81
  4. Step 4: Simplify right side
    640,524.71x = 322,501,940,055.78
  5. Step 5: Solve for x
    x = 322,501,940,055.78/640,524.71
  6. Step 6: Final answer
    x = 503,496.49

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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.