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Finding the Fourth Proportional to 567,309.69, 782,885.79 and 312,660.81

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Solution

The fourth proportional to 567,309.69, 782,885.79 and 312,660.81 is: 431,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,309.69 : 782,885.79 = 312,660.81 : x
  2. Step 2: Convert to fraction form
    567,309.69/782,885.79 = 312,660.81/x
  3. Step 3: Cross multiply
    567,309.69x = 782,885.79 × 312,660.81
  4. Step 4: Simplify right side
    567,309.69x = 244,777,705,238.89
  5. Step 5: Solve for x
    x = 244,777,705,238.89/567,309.69
  6. Step 6: Final answer
    x = 431,471.05

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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.