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Finding the Fourth Proportional to 493,080.64, 680,454.48 and 289,085.92

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Solution

The fourth proportional to 493,080.64, 680,454.48 and 289,085.92 is: 398,940.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,080.64 : 680,454.48 = 289,085.92 : x
  2. Step 2: Convert to fraction form
    493,080.64/680,454.48 = 289,085.92/x
  3. Step 3: Cross multiply
    493,080.64x = 680,454.48 × 289,085.92
  4. Step 4: Simplify right side
    493,080.64x = 196,709,809,368.92
  5. Step 5: Solve for x
    x = 196,709,809,368.92/493,080.64
  6. Step 6: Final answer
    x = 398,940.44

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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.