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Finding the Fourth Proportional to 640,526.72, 883,836.54 and 364,891.82

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Solution

The fourth proportional to 640,526.72, 883,836.54 and 364,891.82 is: 503,499.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,526.72 : 883,836.54 = 364,891.82 : x
  2. Step 2: Convert to fraction form
    640,526.72/883,836.54 = 364,891.82/x
  3. Step 3: Cross multiply
    640,526.72x = 883,836.54 × 364,891.82
  4. Step 4: Simplify right side
    640,526.72x = 322,504,723,663.10
  5. Step 5: Solve for x
    x = 322,504,723,663.10/640,526.72
  6. Step 6: Final answer
    x = 503,499.25

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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.