Home / 753,608.80-1,128,663.60-515,663.20

Finding the Fourth Proportional to 753,608.80, 1,128,663.60 and 515,663.20

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Solution

The fourth proportional to 753,608.80, 1,128,663.60 and 515,663.20 is: 772,297.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,608.80 : 1,128,663.60 = 515,663.20 : x
  2. Step 2: Convert to fraction form
    753,608.80/1,128,663.60 = 515,663.20/x
  3. Step 3: Cross multiply
    753,608.80x = 1,128,663.60 × 515,663.20
  4. Step 4: Simplify right side
    753,608.80x = 582,010,283,699.52
  5. Step 5: Solve for x
    x = 582,010,283,699.52/753,608.80
  6. Step 6: Final answer
    x = 772,297.62

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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.