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Finding the Fourth Proportional to 426,600.63, 640,033.01 and 256,012.83

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Solution

The fourth proportional to 426,600.63, 640,033.01 and 256,012.83 is: 384,098.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,600.63 : 640,033.01 = 256,012.83 : x
  2. Step 2: Convert to fraction form
    426,600.63/640,033.01 = 256,012.83/x
  3. Step 3: Cross multiply
    426,600.63x = 640,033.01 × 256,012.83
  4. Step 4: Simplify right side
    426,600.63x = 163,856,660,903.45
  5. Step 5: Solve for x
    x = 163,856,660,903.45/426,600.63
  6. Step 6: Final answer
    x = 384,098.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.