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Finding the Fourth Proportional to 660,984.20, 912,171.67 and 359,197.64

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Solution

The fourth proportional to 660,984.20, 912,171.67 and 359,197.64 is: 495,700.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,984.20 : 912,171.67 = 359,197.64 : x
  2. Step 2: Convert to fraction form
    660,984.20/912,171.67 = 359,197.64/x
  3. Step 3: Cross multiply
    660,984.20x = 912,171.67 × 359,197.64
  4. Step 4: Simplify right side
    660,984.20x = 327,649,905,680.01
  5. Step 5: Solve for x
    x = 327,649,905,680.01/660,984.20
  6. Step 6: Final answer
    x = 495,700.06

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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.