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Finding the Fourth Proportional to 671,256.32, 926,336 and 384,793.60

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Solution

The fourth proportional to 671,256.32, 926,336 and 384,793.60 is: 531,016.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,256.32 : 926,336 = 384,793.60 : x
  2. Step 2: Convert to fraction form
    671,256.32/926,336 = 384,793.60/x
  3. Step 3: Cross multiply
    671,256.32x = 926,336 × 384,793.60
  4. Step 4: Simplify right side
    671,256.32x = 356,448,164,249.60
  5. Step 5: Solve for x
    x = 356,448,164,249.60/671,256.32
  6. Step 6: Final answer
    x = 531,016.47

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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.