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Finding the Fourth Proportional to 383,915.70, 575,873.55 and 378,010.80

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Solution

The fourth proportional to 383,915.70, 575,873.55 and 378,010.80 is: 567,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,915.70 : 575,873.55 = 378,010.80 : x
  2. Step 2: Convert to fraction form
    383,915.70/575,873.55 = 378,010.80/x
  3. Step 3: Cross multiply
    383,915.70x = 575,873.55 × 378,010.80
  4. Step 4: Simplify right side
    383,915.70x = 217,686,421,334.34
  5. Step 5: Solve for x
    x = 217,686,421,334.34/383,915.70
  6. Step 6: Final answer
    x = 567,016.20

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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.