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Finding the Fourth Proportional to 647,785.68, 893,945.79 and 361,324.32

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Solution

The fourth proportional to 647,785.68, 893,945.79 and 361,324.32 is: 498,628.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,785.68 : 893,945.79 = 361,324.32 : x
  2. Step 2: Convert to fraction form
    647,785.68/893,945.79 = 361,324.32/x
  3. Step 3: Cross multiply
    647,785.68x = 893,945.79 × 361,324.32
  4. Step 4: Simplify right side
    647,785.68x = 323,004,354,688.61
  5. Step 5: Solve for x
    x = 323,004,354,688.61/647,785.68
  6. Step 6: Final answer
    x = 498,628.43

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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.