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Finding the Fourth Proportional to 567,429.76, 783,053.20 and 312,786.56

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Solution

The fourth proportional to 567,429.76, 783,053.20 and 312,786.56 is: 431,645.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,429.76 : 783,053.20 = 312,786.56 : x
  2. Step 2: Convert to fraction form
    567,429.76/783,053.20 = 312,786.56/x
  3. Step 3: Cross multiply
    567,429.76x = 783,053.20 × 312,786.56
  4. Step 4: Simplify right side
    567,429.76x = 244,928,516,724.99
  5. Step 5: Solve for x
    x = 244,928,516,724.99/567,429.76
  6. Step 6: Final answer
    x = 431,645.53

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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.