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Finding the Fourth Proportional to 660,600.55, 911,633.34 and 358,794.55

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Solution

The fourth proportional to 660,600.55, 911,633.34 and 358,794.55 is: 495,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,600.55 : 911,633.34 = 358,794.55 : x
  2. Step 2: Convert to fraction form
    660,600.55/911,633.34 = 358,794.55/x
  3. Step 3: Cross multiply
    660,600.55x = 911,633.34 × 358,794.55
  4. Step 4: Simplify right side
    660,600.55x = 327,089,073,990.30
  5. Step 5: Solve for x
    x = 327,089,073,990.30/660,600.55
  6. Step 6: Final answer
    x = 495,138.97

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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.