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Finding the Fourth Proportional to 664,856.10, 996,992.55 and 265,364.10

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Solution

The fourth proportional to 664,856.10, 996,992.55 and 265,364.10 is: 397,929.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,856.10 : 996,992.55 = 265,364.10 : x
  2. Step 2: Convert to fraction form
    664,856.10/996,992.55 = 265,364.10/x
  3. Step 3: Cross multiply
    664,856.10x = 996,992.55 × 265,364.10
  4. Step 4: Simplify right side
    664,856.10x = 264,566,030,737.46
  5. Step 5: Solve for x
    x = 264,566,030,737.46/664,856.10
  6. Step 6: Final answer
    x = 397,929.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.