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Finding the Fourth Proportional to 648,672.80, 972,134.40 and 434,832.80

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Solution

The fourth proportional to 648,672.80, 972,134.40 and 434,832.80 is: 651,662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,672.80 : 972,134.40 = 434,832.80 : x
  2. Step 2: Convert to fraction form
    648,672.80/972,134.40 = 434,832.80/x
  3. Step 3: Cross multiply
    648,672.80x = 972,134.40 × 434,832.80
  4. Step 4: Simplify right side
    648,672.80x = 422,715,923,128.32
  5. Step 5: Solve for x
    x = 422,715,923,128.32/648,672.80
  6. Step 6: Final answer
    x = 651,662.78

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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.