Home / 646,627.08-892,278.38-398,229.74

Finding the Fourth Proportional to 646,627.08, 892,278.38 and 398,229.74

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Solution

The fourth proportional to 646,627.08, 892,278.38 and 398,229.74 is: 549,515.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,627.08 : 892,278.38 = 398,229.74 : x
  2. Step 2: Convert to fraction form
    646,627.08/892,278.38 = 398,229.74/x
  3. Step 3: Cross multiply
    646,627.08x = 892,278.38 × 398,229.74
  4. Step 4: Simplify right side
    646,627.08x = 355,331,787,155.25
  5. Step 5: Solve for x
    x = 355,331,787,155.25/646,627.08
  6. Step 6: Final answer
    x = 549,515.78

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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.