Home / 644,152.72-965,720.92-406,995.60

Finding the Fourth Proportional to 644,152.72, 965,720.92 and 406,995.60

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Solution

The fourth proportional to 644,152.72, 965,720.92 and 406,995.60 is: 610,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,152.72 : 965,720.92 = 406,995.60 : x
  2. Step 2: Convert to fraction form
    644,152.72/965,720.92 = 406,995.60/x
  3. Step 3: Cross multiply
    644,152.72x = 965,720.92 × 406,995.60
  4. Step 4: Simplify right side
    644,152.72x = 393,044,165,267.95
  5. Step 5: Solve for x
    x = 393,044,165,267.95/644,152.72
  6. Step 6: Final answer
    x = 610,172.33

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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.