Home / 919,915.30-1,379,872.95-415,046.35

Finding the Fourth Proportional to 919,915.30, 1,379,872.95 and 415,046.35

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Solution

The fourth proportional to 919,915.30, 1,379,872.95 and 415,046.35 is: 622,569.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,915.30 : 1,379,872.95 = 415,046.35 : x
  2. Step 2: Convert to fraction form
    919,915.30/1,379,872.95 = 415,046.35/x
  3. Step 3: Cross multiply
    919,915.30x = 1,379,872.95 × 415,046.35
  4. Step 4: Simplify right side
    919,915.30x = 572,711,231,361.23
  5. Step 5: Solve for x
    x = 572,711,231,361.23/919,915.30
  6. Step 6: Final answer
    x = 622,569.53

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Similar ratio
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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.