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Finding the Fourth Proportional to 664,477.20, 916,659.72 and 482,907.60

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Solution

The fourth proportional to 664,477.20, 916,659.72 and 482,907.60 is: 666,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,477.20 : 916,659.72 = 482,907.60 : x
  2. Step 2: Convert to fraction form
    664,477.20/916,659.72 = 482,907.60/x
  3. Step 3: Cross multiply
    664,477.20x = 916,659.72 × 482,907.60
  4. Step 4: Simplify right side
    664,477.20x = 442,661,945,401.87
  5. Step 5: Solve for x
    x = 442,661,945,401.87/664,477.20
  6. Step 6: Final answer
    x = 666,180.79

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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.