Home / 638,136.45-880,610.81-347,741.73

Finding the Fourth Proportional to 638,136.45, 880,610.81 and 347,741.73

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Solution

The fourth proportional to 638,136.45, 880,610.81 and 347,741.73 is: 479,874.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,136.45 : 880,610.81 = 347,741.73 : x
  2. Step 2: Convert to fraction form
    638,136.45/880,610.81 = 347,741.73/x
  3. Step 3: Cross multiply
    638,136.45x = 880,610.81 × 347,741.73
  4. Step 4: Simplify right side
    638,136.45x = 306,225,124,787.39
  5. Step 5: Solve for x
    x = 306,225,124,787.39/638,136.45
  6. Step 6: Final answer
    x = 479,874.05

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Double scale
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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.