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Finding the Fourth Proportional to 515,026.20, 770,789.70 and 452,040.60

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Solution

The fourth proportional to 515,026.20, 770,789.70 and 452,040.60 is: 676,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,026.20 : 770,789.70 = 452,040.60 : x
  2. Step 2: Convert to fraction form
    515,026.20/770,789.70 = 452,040.60/x
  3. Step 3: Cross multiply
    515,026.20x = 770,789.70 × 452,040.60
  4. Step 4: Simplify right side
    515,026.20x = 348,428,238,461.82
  5. Step 5: Solve for x
    x = 348,428,238,461.82/515,026.20
  6. Step 6: Final answer
    x = 676,525.27

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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.