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Finding the Fourth Proportional to 504,640.24, 696,371.72 and 289,628.96

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Solution

The fourth proportional to 504,640.24, 696,371.72 and 289,628.96 is: 399,669.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,640.24 : 696,371.72 = 289,628.96 : x
  2. Step 2: Convert to fraction form
    504,640.24/696,371.72 = 289,628.96/x
  3. Step 3: Cross multiply
    504,640.24x = 696,371.72 × 289,628.96
  4. Step 4: Simplify right side
    504,640.24x = 201,689,417,037.01
  5. Step 5: Solve for x
    x = 201,689,417,037.01/504,640.24
  6. Step 6: Final answer
    x = 399,669.71

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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.