Home / 820,358.89-1,131,640.37-480,761.53

Finding the Fourth Proportional to 820,358.89, 1,131,640.37 and 480,761.53

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Solution

The fourth proportional to 820,358.89, 1,131,640.37 and 480,761.53 is: 663,184.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,358.89 : 1,131,640.37 = 480,761.53 : x
  2. Step 2: Convert to fraction form
    820,358.89/1,131,640.37 = 480,761.53/x
  3. Step 3: Cross multiply
    820,358.89x = 1,131,640.37 × 480,761.53
  4. Step 4: Simplify right side
    820,358.89x = 544,049,152,260.91
  5. Step 5: Solve for x
    x = 544,049,152,260.91/820,358.89
  6. Step 6: Final answer
    x = 663,184.32

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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.