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Finding the Fourth Proportional to 433,512.40, 649,918.68 and 398,520.40

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Solution

The fourth proportional to 433,512.40, 649,918.68 and 398,520.40 is: 597,458.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,512.40 : 649,918.68 = 398,520.40 : x
  2. Step 2: Convert to fraction form
    433,512.40/649,918.68 = 398,520.40/x
  3. Step 3: Cross multiply
    433,512.40x = 649,918.68 × 398,520.40
  4. Step 4: Simplify right side
    433,512.40x = 259,005,852,321.07
  5. Step 5: Solve for x
    x = 259,005,852,321.07/433,512.40
  6. Step 6: Final answer
    x = 597,458.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.