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Finding the Fourth Proportional to 557,862.39, 769,852.76 and 303,213.38

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Solution

The fourth proportional to 557,862.39, 769,852.76 and 303,213.38 is: 418,435.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,862.39 : 769,852.76 = 303,213.38 : x
  2. Step 2: Convert to fraction form
    557,862.39/769,852.76 = 303,213.38/x
  3. Step 3: Cross multiply
    557,862.39x = 769,852.76 × 303,213.38
  4. Step 4: Simplify right side
    557,862.39x = 233,429,652,096.60
  5. Step 5: Solve for x
    x = 233,429,652,096.60/557,862.39
  6. Step 6: Final answer
    x = 418,435.90

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1.5x scale

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.