Home / 645,766.56-968,640.12-290,529.72

Finding the Fourth Proportional to 645,766.56, 968,640.12 and 290,529.72

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Solution

The fourth proportional to 645,766.56, 968,640.12 and 290,529.72 is: 435,790.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,766.56 : 968,640.12 = 290,529.72 : x
  2. Step 2: Convert to fraction form
    645,766.56/968,640.12 = 290,529.72/x
  3. Step 3: Cross multiply
    645,766.56x = 968,640.12 × 290,529.72
  4. Step 4: Simplify right side
    645,766.56x = 281,418,742,844.37
  5. Step 5: Solve for x
    x = 281,418,742,844.37/645,766.56
  6. Step 6: Final answer
    x = 435,790.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.