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Finding the Fourth Proportional to 557,579.30, 769,443.71 and 302,931.09

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Solution

The fourth proportional to 557,579.30, 769,443.71 and 302,931.09 is: 418,036.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,579.30 : 769,443.71 = 302,931.09 : x
  2. Step 2: Convert to fraction form
    557,579.30/769,443.71 = 302,931.09/x
  3. Step 3: Cross multiply
    557,579.30x = 769,443.71 × 302,931.09
  4. Step 4: Simplify right side
    557,579.30x = 233,088,420,249.29
  5. Step 5: Solve for x
    x = 233,088,420,249.29/557,579.30
  6. Step 6: Final answer
    x = 418,036.36

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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.