Home / 645,166.62-890,379.74-387,053.24

Finding the Fourth Proportional to 645,166.62, 890,379.74 and 387,053.24

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Solution

The fourth proportional to 645,166.62, 890,379.74 and 387,053.24 is: 534,163.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,166.62 : 890,379.74 = 387,053.24 : x
  2. Step 2: Convert to fraction form
    645,166.62/890,379.74 = 387,053.24/x
  3. Step 3: Cross multiply
    645,166.62x = 890,379.74 × 387,053.24
  4. Step 4: Simplify right side
    645,166.62x = 344,624,359,713.09
  5. Step 5: Solve for x
    x = 344,624,359,713.09/645,166.62
  6. Step 6: Final answer
    x = 534,163.34

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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.