Home / 638,143.03-880,626.06-347,757.19

Finding the Fourth Proportional to 638,143.03, 880,626.06 and 347,757.19

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Solution

The fourth proportional to 638,143.03, 880,626.06 and 347,757.19 is: 479,898.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,143.03 : 880,626.06 = 347,757.19 : x
  2. Step 2: Convert to fraction form
    638,143.03/880,626.06 = 347,757.19/x
  3. Step 3: Cross multiply
    638,143.03x = 880,626.06 × 347,757.19
  4. Step 4: Simplify right side
    638,143.03x = 306,244,044,066.37
  5. Step 5: Solve for x
    x = 306,244,044,066.37/638,143.03
  6. Step 6: Final answer
    x = 479,898.75

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Half scale
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Double scale
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Similar ratio
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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.