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Finding the Fourth Proportional to 661,180.16, 912,434.64 and 359,374.88

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Solution

The fourth proportional to 661,180.16, 912,434.64 and 359,374.88 is: 495,940.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,180.16 : 912,434.64 = 359,374.88 : x
  2. Step 2: Convert to fraction form
    661,180.16/912,434.64 = 359,374.88/x
  3. Step 3: Cross multiply
    661,180.16x = 912,434.64 × 359,374.88
  4. Step 4: Simplify right side
    661,180.16x = 327,906,089,257.84
  5. Step 5: Solve for x
    x = 327,906,089,257.84/661,180.16
  6. Step 6: Final answer
    x = 495,940.61

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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.