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Finding the Fourth Proportional to 508,864.55, 762,759.51 and 388,659.72

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Solution

The fourth proportional to 508,864.55, 762,759.51 and 388,659.72 is: 582,579.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,864.55 : 762,759.51 = 388,659.72 : x
  2. Step 2: Convert to fraction form
    508,864.55/762,759.51 = 388,659.72/x
  3. Step 3: Cross multiply
    508,864.55x = 762,759.51 × 388,659.72
  4. Step 4: Simplify right side
    508,864.55x = 296,453,897,583.94
  5. Step 5: Solve for x
    x = 296,453,897,583.94/508,864.55
  6. Step 6: Final answer
    x = 582,579.19

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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.