Home / 640,383.30-883,705.05-368,493.18

Finding the Fourth Proportional to 640,383.30, 883,705.05 and 368,493.18

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Solution

The fourth proportional to 640,383.30, 883,705.05 and 368,493.18 is: 508,506.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,383.30 : 883,705.05 = 368,493.18 : x
  2. Step 2: Convert to fraction form
    640,383.30/883,705.05 = 368,493.18/x
  3. Step 3: Cross multiply
    640,383.30x = 883,705.05 × 368,493.18
  4. Step 4: Simplify right side
    640,383.30x = 325,639,284,056.56
  5. Step 5: Solve for x
    x = 325,639,284,056.56/640,383.30
  6. Step 6: Final answer
    x = 508,506.83

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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.