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Finding the Fourth Proportional to 557,962.40, 769,979.04 and 303,320

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Solution

The fourth proportional to 557,962.40, 769,979.04 and 303,320 is: 418,576.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,962.40 : 769,979.04 = 303,320 : x
  2. Step 2: Convert to fraction form
    557,962.40/769,979.04 = 303,320/x
  3. Step 3: Cross multiply
    557,962.40x = 769,979.04 × 303,320
  4. Step 4: Simplify right side
    557,962.40x = 233,550,042,412.80
  5. Step 5: Solve for x
    x = 233,550,042,412.80/557,962.40
  6. Step 6: Final answer
    x = 418,576.67

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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.