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Finding the Fourth Proportional to 640,528.72, 883,839.30 and 364,893.82

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Solution

The fourth proportional to 640,528.72, 883,839.30 and 364,893.82 is: 503,502.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,528.72 : 883,839.30 = 364,893.82 : x
  2. Step 2: Convert to fraction form
    640,528.72/883,839.30 = 364,893.82/x
  3. Step 3: Cross multiply
    640,528.72x = 883,839.30 × 364,893.82
  4. Step 4: Simplify right side
    640,528.72x = 322,507,498,443.13
  5. Step 5: Solve for x
    x = 322,507,498,443.13/640,528.72
  6. Step 6: Final answer
    x = 503,502.01

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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.