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Finding the Fourth Proportional to 659,914.80, 989,872.20 and 460,849.20

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Solution

The fourth proportional to 659,914.80, 989,872.20 and 460,849.20 is: 691,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,914.80 : 989,872.20 = 460,849.20 : x
  2. Step 2: Convert to fraction form
    659,914.80/989,872.20 = 460,849.20/x
  3. Step 3: Cross multiply
    659,914.80x = 989,872.20 × 460,849.20
  4. Step 4: Simplify right side
    659,914.80x = 456,181,811,472.24
  5. Step 5: Solve for x
    x = 456,181,811,472.24/659,914.80
  6. Step 6: Final answer
    x = 691,273.80

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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.