Home / 820,083.66-1,131,715.96-457,507.56

Finding the Fourth Proportional to 820,083.66, 1,131,715.96 and 457,507.56

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Solution

The fourth proportional to 820,083.66, 1,131,715.96 and 457,507.56 is: 631,360.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,083.66 : 1,131,715.96 = 457,507.56 : x
  2. Step 2: Convert to fraction form
    820,083.66/1,131,715.96 = 457,507.56/x
  3. Step 3: Cross multiply
    820,083.66x = 1,131,715.96 × 457,507.56
  4. Step 4: Simplify right side
    820,083.66x = 517,768,607,472.66
  5. Step 5: Solve for x
    x = 517,768,607,472.66/820,083.66
  6. Step 6: Final answer
    x = 631,360.72

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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.