Home / 646,639.16-892,432.19-356,280.53

Finding the Fourth Proportional to 646,639.16, 892,432.19 and 356,280.53

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Solution

The fourth proportional to 646,639.16, 892,432.19 and 356,280.53 is: 491,705.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,639.16 : 892,432.19 = 356,280.53 : x
  2. Step 2: Convert to fraction form
    646,639.16/892,432.19 = 356,280.53/x
  3. Step 3: Cross multiply
    646,639.16x = 892,432.19 × 356,280.53
  4. Step 4: Simplify right side
    646,639.16x = 317,956,211,860.86
  5. Step 5: Solve for x
    x = 317,956,211,860.86/646,639.16
  6. Step 6: Final answer
    x = 491,705.78

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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.