Home / 812,677.13-1,121,427.89-463,815.82

Finding the Fourth Proportional to 812,677.13, 1,121,427.89 and 463,815.82

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Solution

The fourth proportional to 812,677.13, 1,121,427.89 and 463,815.82 is: 640,027.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,677.13 : 1,121,427.89 = 463,815.82 : x
  2. Step 2: Convert to fraction form
    812,677.13/1,121,427.89 = 463,815.82/x
  3. Step 3: Cross multiply
    812,677.13x = 1,121,427.89 × 463,815.82
  4. Step 4: Simplify right side
    812,677.13x = 520,135,996,371.22
  5. Step 5: Solve for x
    x = 520,135,996,371.22/812,677.13
  6. Step 6: Final answer
    x = 640,027.85

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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.