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Finding the Fourth Proportional to 439,512.60, 657,519.30 and 380,998.20

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Solution

The fourth proportional to 439,512.60, 657,519.30 and 380,998.20 is: 569,980.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,512.60 : 657,519.30 = 380,998.20 : x
  2. Step 2: Convert to fraction form
    439,512.60/657,519.30 = 380,998.20/x
  3. Step 3: Cross multiply
    439,512.60x = 657,519.30 × 380,998.20
  4. Step 4: Simplify right side
    439,512.60x = 250,513,669,765.26
  5. Step 5: Solve for x
    x = 250,513,669,765.26/439,512.60
  6. Step 6: Final answer
    x = 569,980.63

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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.