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Finding the Fourth Proportional to 561,866.90, 840,643.79 and 322,095.76

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Solution

The fourth proportional to 561,866.90, 840,643.79 and 322,095.76 is: 481,907.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,866.90 : 840,643.79 = 322,095.76 : x
  2. Step 2: Convert to fraction form
    561,866.90/840,643.79 = 322,095.76/x
  3. Step 3: Cross multiply
    561,866.90x = 840,643.79 × 322,095.76
  4. Step 4: Simplify right side
    561,866.90x = 270,767,796,717.24
  5. Step 5: Solve for x
    x = 270,767,796,717.24/561,866.90
  6. Step 6: Final answer
    x = 481,907.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.