Home / 739,248.12-1,108,991.79-289,725.21

Finding the Fourth Proportional to 739,248.12, 1,108,991.79 and 289,725.21

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Solution

The fourth proportional to 739,248.12, 1,108,991.79 and 289,725.21 is: 434,634.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,248.12 : 1,108,991.79 = 289,725.21 : x
  2. Step 2: Convert to fraction form
    739,248.12/1,108,991.79 = 289,725.21/x
  3. Step 3: Cross multiply
    739,248.12x = 1,108,991.79 × 289,725.21
  4. Step 4: Simplify right side
    739,248.12x = 321,302,879,246.03
  5. Step 5: Solve for x
    x = 321,302,879,246.03/739,248.12
  6. Step 6: Final answer
    x = 434,634.69

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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.