Home / 761,608.48-1,142,149.20-312,201.76

Finding the Fourth Proportional to 761,608.48, 1,142,149.20 and 312,201.76

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Solution

The fourth proportional to 761,608.48, 1,142,149.20 and 312,201.76 is: 468,194.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,608.48 : 1,142,149.20 = 312,201.76 : x
  2. Step 2: Convert to fraction form
    761,608.48/1,142,149.20 = 312,201.76/x
  3. Step 3: Cross multiply
    761,608.48x = 1,142,149.20 × 312,201.76
  4. Step 4: Simplify right side
    761,608.48x = 356,580,990,422.59
  5. Step 5: Solve for x
    x = 356,580,990,422.59/761,608.48
  6. Step 6: Final answer
    x = 468,194.62

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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.