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Finding the Fourth Proportional to 645,571.99, 890,997.45 and 373,593.02

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Solution

The fourth proportional to 645,571.99, 890,997.45 and 373,593.02 is: 515,620.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,571.99 : 890,997.45 = 373,593.02 : x
  2. Step 2: Convert to fraction form
    645,571.99/890,997.45 = 373,593.02/x
  3. Step 3: Cross multiply
    645,571.99x = 890,997.45 × 373,593.02
  4. Step 4: Simplify right side
    645,571.99x = 332,870,428,157.80
  5. Step 5: Solve for x
    x = 332,870,428,157.80/645,571.99
  6. Step 6: Final answer
    x = 515,620.93

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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.