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Finding the Fourth Proportional to 644,984.32, 890,007.60 and 373,057.60

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Solution

The fourth proportional to 644,984.32, 890,007.60 and 373,057.60 is: 514,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,984.32 : 890,007.60 = 373,057.60 : x
  2. Step 2: Convert to fraction form
    644,984.32/890,007.60 = 373,057.60/x
  3. Step 3: Cross multiply
    644,984.32x = 890,007.60 × 373,057.60
  4. Step 4: Simplify right side
    644,984.32x = 332,024,099,237.76
  5. Step 5: Solve for x
    x = 332,024,099,237.76/644,984.32
  6. Step 6: Final answer
    x = 514,778.56

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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.