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Finding the Fourth Proportional to 439,645.20, 659,856.60 and 376,659.60

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Solution

The fourth proportional to 439,645.20, 659,856.60 and 376,659.60 is: 565,322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,645.20 : 659,856.60 = 376,659.60 : x
  2. Step 2: Convert to fraction form
    439,645.20/659,856.60 = 376,659.60/x
  3. Step 3: Cross multiply
    439,645.20x = 659,856.60 × 376,659.60
  4. Step 4: Simplify right side
    439,645.20x = 248,541,323,013.36
  5. Step 5: Solve for x
    x = 248,541,323,013.36/439,645.20
  6. Step 6: Final answer
    x = 565,322.50

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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.