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Finding the Fourth Proportional to 618,489.67, 926,159.32 and 407,487.91

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Solution

The fourth proportional to 618,489.67, 926,159.32 and 407,487.91 is: 610,194.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,489.67 : 926,159.32 = 407,487.91 : x
  2. Step 2: Convert to fraction form
    618,489.67/926,159.32 = 407,487.91/x
  3. Step 3: Cross multiply
    618,489.67x = 926,159.32 × 407,487.91
  4. Step 4: Simplify right side
    618,489.67x = 377,398,725,633.82
  5. Step 5: Solve for x
    x = 377,398,725,633.82/618,489.67
  6. Step 6: Final answer
    x = 610,194.06

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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.