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Finding the Fourth Proportional to 450,060.24, 620,790.42 and 288,659.64

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Solution

The fourth proportional to 450,060.24, 620,790.42 and 288,659.64 is: 398,162.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,060.24 : 620,790.42 = 288,659.64 : x
  2. Step 2: Convert to fraction form
    450,060.24/620,790.42 = 288,659.64/x
  3. Step 3: Cross multiply
    450,060.24x = 620,790.42 × 288,659.64
  4. Step 4: Simplify right side
    450,060.24x = 179,197,139,152.65
  5. Step 5: Solve for x
    x = 179,197,139,152.65/450,060.24
  6. Step 6: Final answer
    x = 398,162.56

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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.