Home / 856,364.16-1,180,405.20-580,632.72

Finding the Fourth Proportional to 856,364.16, 1,180,405.20 and 580,632.72

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Solution

The fourth proportional to 856,364.16, 1,180,405.20 and 580,632.72 is: 800,339.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,364.16 : 1,180,405.20 = 580,632.72 : x
  2. Step 2: Convert to fraction form
    856,364.16/1,180,405.20 = 580,632.72/x
  3. Step 3: Cross multiply
    856,364.16x = 1,180,405.20 × 580,632.72
  4. Step 4: Simplify right side
    856,364.16x = 685,381,881,978.14
  5. Step 5: Solve for x
    x = 685,381,881,978.14/856,364.16
  6. Step 6: Final answer
    x = 800,339.29

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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.