Home / 688,231.37-949,376.73-639,520.19

Finding the Fourth Proportional to 688,231.37, 949,376.73 and 639,520.19

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Solution

The fourth proportional to 688,231.37, 949,376.73 and 639,520.19 is: 882,182.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,231.37 : 949,376.73 = 639,520.19 : x
  2. Step 2: Convert to fraction form
    688,231.37/949,376.73 = 639,520.19/x
  3. Step 3: Cross multiply
    688,231.37x = 949,376.73 × 639,520.19
  4. Step 4: Simplify right side
    688,231.37x = 607,145,587,906.95
  5. Step 5: Solve for x
    x = 607,145,587,906.95/688,231.37
  6. Step 6: Final answer
    x = 882,182.38

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Double scale
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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.