Home / 812,122.07-1,120,714.85-449,538.12

Finding the Fourth Proportional to 812,122.07, 1,120,714.85 and 449,538.12

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Solution

The fourth proportional to 812,122.07, 1,120,714.85 and 449,538.12 is: 620,355.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,122.07 : 1,120,714.85 = 449,538.12 : x
  2. Step 2: Convert to fraction form
    812,122.07/1,120,714.85 = 449,538.12/x
  3. Step 3: Cross multiply
    812,122.07x = 1,120,714.85 × 449,538.12
  4. Step 4: Simplify right side
    812,122.07x = 503,804,044,477.39
  5. Step 5: Solve for x
    x = 503,804,044,477.39/812,122.07
  6. Step 6: Final answer
    x = 620,355.07

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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.