Home / 1,188,905.40-1,783,337.46-478,915.29

Finding the Fourth Proportional to 1,188,905.40, 1,783,337.46 and 478,915.29

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Solution

The fourth proportional to 1,188,905.40, 1,783,337.46 and 478,915.29 is: 718,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,905.40 : 1,783,337.46 = 478,915.29 : x
  2. Step 2: Convert to fraction form
    1,188,905.40/1,783,337.46 = 478,915.29/x
  3. Step 3: Cross multiply
    1,188,905.40x = 1,783,337.46 × 478,915.29
  4. Step 4: Simplify right side
    1,188,905.40x = 854,067,576,823.76
  5. Step 5: Solve for x
    x = 854,067,576,823.76/1,188,905.40
  6. Step 6: Final answer
    x = 718,364.62

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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.