Home / 869,002.21-1,199,220.28-506,640.61

Finding the Fourth Proportional to 869,002.21, 1,199,220.28 and 506,640.61

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Solution

The fourth proportional to 869,002.21, 1,199,220.28 and 506,640.61 is: 699,162.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,002.21 : 1,199,220.28 = 506,640.61 : x
  2. Step 2: Convert to fraction form
    869,002.21/1,199,220.28 = 506,640.61/x
  3. Step 3: Cross multiply
    869,002.21x = 1,199,220.28 × 506,640.61
  4. Step 4: Simplify right side
    869,002.21x = 607,573,694,183.57
  5. Step 5: Solve for x
    x = 607,573,694,183.57/869,002.21
  6. Step 6: Final answer
    x = 699,162.43

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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.