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Finding the Fourth Proportional to 553,644.75, 764,029.71 and 298,995.90

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Solution

The fourth proportional to 553,644.75, 764,029.71 and 298,995.90 is: 412,614.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,644.75 : 764,029.71 = 298,995.90 : x
  2. Step 2: Convert to fraction form
    553,644.75/764,029.71 = 298,995.90/x
  3. Step 3: Cross multiply
    553,644.75x = 764,029.71 × 298,995.90
  4. Step 4: Simplify right side
    553,644.75x = 228,441,750,768.19
  5. Step 5: Solve for x
    x = 228,441,750,768.19/553,644.75
  6. Step 6: Final answer
    x = 412,614.32

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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.