Home / 485,626.83-668,640.02-412,886.67

Finding the Fourth Proportional to 485,626.83, 668,640.02 and 412,886.67

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Solution

The fourth proportional to 485,626.83, 668,640.02 and 412,886.67 is: 568,487.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,626.83 : 668,640.02 = 412,886.67 : x
  2. Step 2: Convert to fraction form
    485,626.83/668,640.02 = 412,886.67/x
  3. Step 3: Cross multiply
    485,626.83x = 668,640.02 × 412,886.67
  4. Step 4: Simplify right side
    485,626.83x = 276,072,551,286.53
  5. Step 5: Solve for x
    x = 276,072,551,286.53/485,626.83
  6. Step 6: Final answer
    x = 568,487.02

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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.