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Finding the Fourth Proportional to 656,759.83, 906,308.00 and 385,008.72

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Solution

The fourth proportional to 656,759.83, 906,308.00 and 385,008.72 is: 531,299.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,759.83 : 906,308.00 = 385,008.72 : x
  2. Step 2: Convert to fraction form
    656,759.83/906,308.00 = 385,008.72/x
  3. Step 3: Cross multiply
    656,759.83x = 906,308.00 × 385,008.72
  4. Step 4: Simplify right side
    656,759.83x = 348,936,479,125.84
  5. Step 5: Solve for x
    x = 348,936,479,125.84/656,759.83
  6. Step 6: Final answer
    x = 531,299.97

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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.