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Finding the Fourth Proportional to 695,073.65, 959,036.10 and 423,138.43

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Solution

The fourth proportional to 695,073.65, 959,036.10 and 423,138.43 is: 583,830.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,073.65 : 959,036.10 = 423,138.43 : x
  2. Step 2: Convert to fraction form
    695,073.65/959,036.10 = 423,138.43/x
  3. Step 3: Cross multiply
    695,073.65x = 959,036.10 × 423,138.43
  4. Step 4: Simplify right side
    695,073.65x = 405,805,024,872.14
  5. Step 5: Solve for x
    x = 405,805,024,872.14/695,073.65
  6. Step 6: Final answer
    x = 583,830.25

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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.