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Finding the Fourth Proportional to 479,328.64, 661,713.23 and 298,098.96

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Solution

The fourth proportional to 479,328.64, 661,713.23 and 298,098.96 is: 411,525.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,328.64 : 661,713.23 = 298,098.96 : x
  2. Step 2: Convert to fraction form
    479,328.64/661,713.23 = 298,098.96/x
  3. Step 3: Cross multiply
    479,328.64x = 661,713.23 × 298,098.96
  4. Step 4: Simplify right side
    479,328.64x = 197,256,025,681.24
  5. Step 5: Solve for x
    x = 197,256,025,681.24/479,328.64
  6. Step 6: Final answer
    x = 411,525.64

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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.