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Finding the Fourth Proportional to 638,607.59, 956,827.38 and 385,355.96

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Solution

The fourth proportional to 638,607.59, 956,827.38 and 385,355.96 is: 577,379.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,607.59 : 956,827.38 = 385,355.96 : x
  2. Step 2: Convert to fraction form
    638,607.59/956,827.38 = 385,355.96/x
  3. Step 3: Cross multiply
    638,607.59x = 956,827.38 × 385,355.96
  4. Step 4: Simplify right side
    638,607.59x = 368,719,128,790.05
  5. Step 5: Solve for x
    x = 368,719,128,790.05/638,607.59
  6. Step 6: Final answer
    x = 577,379.81

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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.