Home / 855,450.18-1,180,816.20-493,018.74

Finding the Fourth Proportional to 855,450.18, 1,180,816.20 and 493,018.74

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Solution

The fourth proportional to 855,450.18, 1,180,816.20 and 493,018.74 is: 680,535.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,450.18 : 1,180,816.20 = 493,018.74 : x
  2. Step 2: Convert to fraction form
    855,450.18/1,180,816.20 = 493,018.74/x
  3. Step 3: Cross multiply
    855,450.18x = 1,180,816.20 × 493,018.74
  4. Step 4: Simplify right side
    855,450.18x = 582,164,515,095.59
  5. Step 5: Solve for x
    x = 582,164,515,095.59/855,450.18
  6. Step 6: Final answer
    x = 680,535.85

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Double scale
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1.5x scale

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.