Home / 813,915.38-1,123,148.48-451,325.82

Finding the Fourth Proportional to 813,915.38, 1,123,148.48 and 451,325.82

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Solution

The fourth proportional to 813,915.38, 1,123,148.48 and 451,325.82 is: 622,799.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,915.38 : 1,123,148.48 = 451,325.82 : x
  2. Step 2: Convert to fraction form
    813,915.38/1,123,148.48 = 451,325.82/x
  3. Step 3: Cross multiply
    813,915.38x = 1,123,148.48 × 451,325.82
  4. Step 4: Simplify right side
    813,915.38x = 506,905,903,735.07
  5. Step 5: Solve for x
    x = 506,905,903,735.07/813,915.38
  6. Step 6: Final answer
    x = 622,799.27

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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.