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Finding the Fourth Proportional to 655,352,589.68, 983,022,156 and 378,827,852.72

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Solution

The fourth proportional to 655,352,589.68, 983,022,156 and 378,827,852.72 is: 568,237,889.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,352,589.68 : 983,022,156 = 378,827,852.72 : x
  2. Step 2: Convert to fraction form
    655,352,589.68/983,022,156 = 378,827,852.72/x
  3. Step 3: Cross multiply
    655,352,589.68x = 983,022,156 × 378,827,852.72
  4. Step 4: Simplify right side
    655,352,589.68x = 372,396,172,533,664,896
  5. Step 5: Solve for x
    x = 372,396,172,533,664,896/655,352,589.68
  6. Step 6: Final answer
    x = 568,237,889.65

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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.