Home / 915,107.88-1,372,324.84-315,915.24

Finding the Fourth Proportional to 915,107.88, 1,372,324.84 and 315,915.24

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Solution

The fourth proportional to 915,107.88, 1,372,324.84 and 315,915.24 is: 473,756.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,107.88 : 1,372,324.84 = 315,915.24 : x
  2. Step 2: Convert to fraction form
    915,107.88/1,372,324.84 = 315,915.24/x
  3. Step 3: Cross multiply
    915,107.88x = 1,372,324.84 × 315,915.24
  4. Step 4: Simplify right side
    915,107.88x = 433,538,331,186.56
  5. Step 5: Solve for x
    x = 433,538,331,186.56/915,107.88
  6. Step 6: Final answer
    x = 473,756.53

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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.