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Finding the Fourth Proportional to 557,981.40, 770,005.24 and 303,339

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Solution

The fourth proportional to 557,981.40, 770,005.24 and 303,339 is: 418,602.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,981.40 : 770,005.24 = 303,339 : x
  2. Step 2: Convert to fraction form
    557,981.40/770,005.24 = 303,339/x
  3. Step 3: Cross multiply
    557,981.40x = 770,005.24 × 303,339
  4. Step 4: Simplify right side
    557,981.40x = 233,572,619,496.36
  5. Step 5: Solve for x
    x = 233,572,619,496.36/557,981.40
  6. Step 6: Final answer
    x = 418,602.88

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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.