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Finding the Fourth Proportional to 557,982.40, 770,006.64 and 303,340

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Solution

The fourth proportional to 557,982.40, 770,006.64 and 303,340 is: 418,604.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,982.40 : 770,006.64 = 303,340 : x
  2. Step 2: Convert to fraction form
    557,982.40/770,006.64 = 303,340/x
  3. Step 3: Cross multiply
    557,982.40x = 770,006.64 × 303,340
  4. Step 4: Simplify right side
    557,982.40x = 233,573,814,177.60
  5. Step 5: Solve for x
    x = 233,573,814,177.60/557,982.40
  6. Step 6: Final answer
    x = 418,604.27

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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.