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Finding the Fourth Proportional to 664,653.12, 917,216.64 and 362,847.12

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Solution

The fourth proportional to 664,653.12, 917,216.64 and 362,847.12 is: 500,726.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,653.12 : 917,216.64 = 362,847.12 : x
  2. Step 2: Convert to fraction form
    664,653.12/917,216.64 = 362,847.12/x
  3. Step 3: Cross multiply
    664,653.12x = 917,216.64 × 362,847.12
  4. Step 4: Simplify right side
    664,653.12x = 332,809,416,240.08
  5. Step 5: Solve for x
    x = 332,809,416,240.08/664,653.12
  6. Step 6: Final answer
    x = 500,726.48

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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.