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Finding the Fourth Proportional to 640,832.96, 958,333.78 and 478,841.87

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Solution

The fourth proportional to 640,832.96, 958,333.78 and 478,841.87 is: 716,084.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,832.96 : 958,333.78 = 478,841.87 : x
  2. Step 2: Convert to fraction form
    640,832.96/958,333.78 = 478,841.87/x
  3. Step 3: Cross multiply
    640,832.96x = 958,333.78 × 478,841.87
  4. Step 4: Simplify right side
    640,832.96x = 458,890,339,299.37
  5. Step 5: Solve for x
    x = 458,890,339,299.37/640,832.96
  6. Step 6: Final answer
    x = 716,084.17

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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.