Home / 639,183.83-881,358.43-522,533.21

Finding the Fourth Proportional to 639,183.83, 881,358.43 and 522,533.21

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Solution

The fourth proportional to 639,183.83, 881,358.43 and 522,533.21 is: 720,511.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,183.83 : 881,358.43 = 522,533.21 : x
  2. Step 2: Convert to fraction form
    639,183.83/881,358.43 = 522,533.21/x
  3. Step 3: Cross multiply
    639,183.83x = 881,358.43 × 522,533.21
  4. Step 4: Simplify right side
    639,183.83x = 460,539,049,139.93
  5. Step 5: Solve for x
    x = 460,539,049,139.93/639,183.83
  6. Step 6: Final answer
    x = 720,511.11

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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.