Home / 550,821.25-825,456.57-438,000.81

Finding the Fourth Proportional to 550,821.25, 825,456.57 and 438,000.81

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Solution

The fourth proportional to 550,821.25, 825,456.57 and 438,000.81 is: 656,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,821.25 : 825,456.57 = 438,000.81 : x
  2. Step 2: Convert to fraction form
    550,821.25/825,456.57 = 438,000.81/x
  3. Step 3: Cross multiply
    550,821.25x = 825,456.57 × 438,000.81
  4. Step 4: Simplify right side
    550,821.25x = 361,550,646,279.82
  5. Step 5: Solve for x
    x = 361,550,646,279.82/550,821.25
  6. Step 6: Final answer
    x = 656,384.71

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1.5x scale

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.