Home / 820,618.16-1,230,804.10-259,579.76

Finding the Fourth Proportional to 820,618.16, 1,230,804.10 and 259,579.76

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Solution

The fourth proportional to 820,618.16, 1,230,804.10 and 259,579.76 is: 389,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,618.16 : 1,230,804.10 = 259,579.76 : x
  2. Step 2: Convert to fraction form
    820,618.16/1,230,804.10 = 259,579.76/x
  3. Step 3: Cross multiply
    820,618.16x = 1,230,804.10 × 259,579.76
  4. Step 4: Simplify right side
    820,618.16x = 319,491,832,885.02
  5. Step 5: Solve for x
    x = 319,491,832,885.02/820,618.16
  6. Step 6: Final answer
    x = 389,330.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.