Home / 812,108.60-1,217,477.96-511,927.68

Finding the Fourth Proportional to 812,108.60, 1,217,477.96 and 511,927.68

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Solution

The fourth proportional to 812,108.60, 1,217,477.96 and 511,927.68 is: 767,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,108.60 : 1,217,477.96 = 511,927.68 : x
  2. Step 2: Convert to fraction form
    812,108.60/1,217,477.96 = 511,927.68/x
  3. Step 3: Cross multiply
    812,108.60x = 1,217,477.96 × 511,927.68
  4. Step 4: Simplify right side
    812,108.60x = 623,260,667,513.93
  5. Step 5: Solve for x
    x = 623,260,667,513.93/812,108.60
  6. Step 6: Final answer
    x = 767,459.76

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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.