Home / 639,997.04-883,073.76-385,364.72

Finding the Fourth Proportional to 639,997.04, 883,073.76 and 385,364.72

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Solution

The fourth proportional to 639,997.04, 883,073.76 and 385,364.72 is: 531,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,997.04 : 883,073.76 = 385,364.72 : x
  2. Step 2: Convert to fraction form
    639,997.04/883,073.76 = 385,364.72/x
  3. Step 3: Cross multiply
    639,997.04x = 883,073.76 × 385,364.72
  4. Step 4: Simplify right side
    639,997.04x = 340,305,472,261.75
  5. Step 5: Solve for x
    x = 340,305,472,261.75/639,997.04
  6. Step 6: Final answer
    x = 531,729.76

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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.