Home / 685,216.02-945,699.44-394,772.28

Finding the Fourth Proportional to 685,216.02, 945,699.44 and 394,772.28

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Solution

The fourth proportional to 685,216.02, 945,699.44 and 394,772.28 is: 544,844.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,216.02 : 945,699.44 = 394,772.28 : x
  2. Step 2: Convert to fraction form
    685,216.02/945,699.44 = 394,772.28/x
  3. Step 3: Cross multiply
    685,216.02x = 945,699.44 × 394,772.28
  4. Step 4: Simplify right side
    685,216.02x = 373,335,924,123.52
  5. Step 5: Solve for x
    x = 373,335,924,123.52/685,216.02
  6. Step 6: Final answer
    x = 544,844.13

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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.