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Finding the Fourth Proportional to 610,027.20, 915,478.20 and 343,504.80

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Solution

The fourth proportional to 610,027.20, 915,478.20 and 343,504.80 is: 515,503.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,027.20 : 915,478.20 = 343,504.80 : x
  2. Step 2: Convert to fraction form
    610,027.20/915,478.20 = 343,504.80/x
  3. Step 3: Cross multiply
    610,027.20x = 915,478.20 × 343,504.80
  4. Step 4: Simplify right side
    610,027.20x = 314,471,155,995.36
  5. Step 5: Solve for x
    x = 314,471,155,995.36/610,027.20
  6. Step 6: Final answer
    x = 515,503.50

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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.