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Finding the Fourth Proportional to 553,982.76, 764,326.26 and 338,898.60

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Solution

The fourth proportional to 553,982.76, 764,326.26 and 338,898.60 is: 467,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,982.76 : 764,326.26 = 338,898.60 : x
  2. Step 2: Convert to fraction form
    553,982.76/764,326.26 = 338,898.60/x
  3. Step 3: Cross multiply
    553,982.76x = 764,326.26 × 338,898.60
  4. Step 4: Simplify right side
    553,982.76x = 259,029,099,457.24
  5. Step 5: Solve for x
    x = 259,029,099,457.24/553,982.76
  6. Step 6: Final answer
    x = 467,576.10

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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.