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Finding the Fourth Proportional to 479,330.18, 661,715.34 and 298,100.48

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Solution

The fourth proportional to 479,330.18, 661,715.34 and 298,100.48 is: 411,527.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,330.18 : 661,715.34 = 298,100.48 : x
  2. Step 2: Convert to fraction form
    479,330.18/661,715.34 = 298,100.48/x
  3. Step 3: Cross multiply
    479,330.18x = 661,715.34 × 298,100.48
  4. Step 4: Simplify right side
    479,330.18x = 197,257,660,477.36
  5. Step 5: Solve for x
    x = 197,257,660,477.36/479,330.18
  6. Step 6: Final answer
    x = 411,527.73

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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.