Home / 763,115.30-1,144,834.86-289,790.18

Finding the Fourth Proportional to 763,115.30, 1,144,834.86 and 289,790.18

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Solution

The fourth proportional to 763,115.30, 1,144,834.86 and 289,790.18 is: 434,746.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,115.30 : 1,144,834.86 = 289,790.18 : x
  2. Step 2: Convert to fraction form
    763,115.30/1,144,834.86 = 289,790.18/x
  3. Step 3: Cross multiply
    763,115.30x = 1,144,834.86 × 289,790.18
  4. Step 4: Simplify right side
    763,115.30x = 331,761,900,149.68
  5. Step 5: Solve for x
    x = 331,761,900,149.68/763,115.30
  6. Step 6: Final answer
    x = 434,746.75

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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.