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Finding the Fourth Proportional to 553,641.75, 764,025.57 and 298,992.90

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Solution

The fourth proportional to 553,641.75, 764,025.57 and 298,992.90 is: 412,610.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,641.75 : 764,025.57 = 298,992.90 : x
  2. Step 2: Convert to fraction form
    553,641.75/764,025.57 = 298,992.90/x
  3. Step 3: Cross multiply
    553,641.75x = 764,025.57 × 298,992.90
  4. Step 4: Simplify right side
    553,641.75x = 228,438,220,848.45
  5. Step 5: Solve for x
    x = 228,438,220,848.45/553,641.75
  6. Step 6: Final answer
    x = 412,610.18

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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.