Home / 928,186.86-1,280,976.21-520,282.20

Finding the Fourth Proportional to 928,186.86, 1,280,976.21 and 520,282.20

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Solution

The fourth proportional to 928,186.86, 1,280,976.21 and 520,282.20 is: 718,033.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,186.86 : 1,280,976.21 = 520,282.20 : x
  2. Step 2: Convert to fraction form
    928,186.86/1,280,976.21 = 520,282.20/x
  3. Step 3: Cross multiply
    928,186.86x = 1,280,976.21 × 520,282.20
  4. Step 4: Simplify right side
    928,186.86x = 666,469,120,686.46
  5. Step 5: Solve for x
    x = 666,469,120,686.46/928,186.86
  6. Step 6: Final answer
    x = 718,033.35

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Double scale
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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.