Home / 820,992.16-1,231,312.40-479,207.76

Finding the Fourth Proportional to 820,992.16, 1,231,312.40 and 479,207.76

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Solution

The fourth proportional to 820,992.16, 1,231,312.40 and 479,207.76 is: 718,709.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,992.16 : 1,231,312.40 = 479,207.76 : x
  2. Step 2: Convert to fraction form
    820,992.16/1,231,312.40 = 479,207.76/x
  3. Step 3: Cross multiply
    820,992.16x = 1,231,312.40 × 479,207.76
  4. Step 4: Simplify right side
    820,992.16x = 590,054,457,064.22
  5. Step 5: Solve for x
    x = 590,054,457,064.22/820,992.16
  6. Step 6: Final answer
    x = 718,709.00

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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.