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Finding the Fourth Proportional to 886,810.20, 1,330,411.86 and 255,674.76

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Solution

The fourth proportional to 886,810.20, 1,330,411.86 and 255,674.76 is: 383,568.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,810.20 : 1,330,411.86 = 255,674.76 : x
  2. Step 2: Convert to fraction form
    886,810.20/1,330,411.86 = 255,674.76/x
  3. Step 3: Cross multiply
    886,810.20x = 1,330,411.86 × 255,674.76
  4. Step 4: Simplify right side
    886,810.20x = 340,152,733,006.65
  5. Step 5: Solve for x
    x = 340,152,733,006.65/886,810.20
  6. Step 6: Final answer
    x = 383,568.81

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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.