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Finding the Fourth Proportional to 609,430.32, 914,301 and 386,375.76

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Solution

The fourth proportional to 609,430.32, 914,301 and 386,375.76 is: 579,662.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,430.32 : 914,301 = 386,375.76 : x
  2. Step 2: Convert to fraction form
    609,430.32/914,301 = 386,375.76/x
  3. Step 3: Cross multiply
    609,430.32x = 914,301 × 386,375.76
  4. Step 4: Simplify right side
    609,430.32x = 353,263,743,743.76
  5. Step 5: Solve for x
    x = 353,263,743,743.76/609,430.32
  6. Step 6: Final answer
    x = 579,662.24

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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.