Home / 513,731.70-708,956.28-320,217.57

Finding the Fourth Proportional to 513,731.70, 708,956.28 and 320,217.57

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Solution

The fourth proportional to 513,731.70, 708,956.28 and 320,217.57 is: 441,904.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,731.70 : 708,956.28 = 320,217.57 : x
  2. Step 2: Convert to fraction form
    513,731.70/708,956.28 = 320,217.57/x
  3. Step 3: Cross multiply
    513,731.70x = 708,956.28 × 320,217.57
  4. Step 4: Simplify right side
    513,731.70x = 227,020,257,217.84
  5. Step 5: Solve for x
    x = 227,020,257,217.84/513,731.70
  6. Step 6: Final answer
    x = 441,904.32

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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.