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Finding the Fourth Proportional to 557,678.72, 769,602.67 and 303,029.91

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Solution

The fourth proportional to 557,678.72, 769,602.67 and 303,029.91 is: 418,184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,678.72 : 769,602.67 = 303,029.91 : x
  2. Step 2: Convert to fraction form
    557,678.72/769,602.67 = 303,029.91/x
  3. Step 3: Cross multiply
    557,678.72x = 769,602.67 × 303,029.91
  4. Step 4: Simplify right side
    557,678.72x = 233,212,627,068.29
  5. Step 5: Solve for x
    x = 233,212,627,068.29/557,678.72
  6. Step 6: Final answer
    x = 418,184.55

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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.