Home / 683,789.52-943,665.86-393,445.20

Finding the Fourth Proportional to 683,789.52, 943,665.86 and 393,445.20

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Solution

The fourth proportional to 683,789.52, 943,665.86 and 393,445.20 is: 542,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,789.52 : 943,665.86 = 393,445.20 : x
  2. Step 2: Convert to fraction form
    683,789.52/943,665.86 = 393,445.20/x
  3. Step 3: Cross multiply
    683,789.52x = 943,665.86 × 393,445.20
  4. Step 4: Simplify right side
    683,789.52x = 371,280,800,435.48
  5. Step 5: Solve for x
    x = 371,280,800,435.48/683,789.52
  6. Step 6: Final answer
    x = 542,975.27

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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.