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Finding the Fourth Proportional to 615,147.10, 923,704.80 and 465,556.30

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Solution

The fourth proportional to 615,147.10, 923,704.80 and 465,556.30 is: 699,079.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,147.10 : 923,704.80 = 465,556.30 : x
  2. Step 2: Convert to fraction form
    615,147.10/923,704.80 = 465,556.30/x
  3. Step 3: Cross multiply
    615,147.10x = 923,704.80 × 465,556.30
  4. Step 4: Simplify right side
    615,147.10x = 430,036,588,980.24
  5. Step 5: Solve for x
    x = 430,036,588,980.24/615,147.10
  6. Step 6: Final answer
    x = 699,079.28

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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.