Home / 677,131.76-1,015,402.36-256,112.39

Finding the Fourth Proportional to 677,131.76, 1,015,402.36 and 256,112.39

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Solution

The fourth proportional to 677,131.76, 1,015,402.36 and 256,112.39 is: 384,056.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,131.76 : 1,015,402.36 = 256,112.39 : x
  2. Step 2: Convert to fraction form
    677,131.76/1,015,402.36 = 256,112.39/x
  3. Step 3: Cross multiply
    677,131.76x = 1,015,402.36 × 256,112.39
  4. Step 4: Simplify right side
    677,131.76x = 260,057,125,705.80
  5. Step 5: Solve for x
    x = 260,057,125,705.80/677,131.76
  6. Step 6: Final answer
    x = 384,056.90

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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.