Home / 817,748.76-1,128,493.35-455,164.86

Finding the Fourth Proportional to 817,748.76, 1,128,493.35 and 455,164.86

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Solution

The fourth proportional to 817,748.76, 1,128,493.35 and 455,164.86 is: 628,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,748.76 : 1,128,493.35 = 455,164.86 : x
  2. Step 2: Convert to fraction form
    817,748.76/1,128,493.35 = 455,164.86/x
  3. Step 3: Cross multiply
    817,748.76x = 1,128,493.35 × 455,164.86
  4. Step 4: Simplify right side
    817,748.76x = 513,650,517,663.68
  5. Step 5: Solve for x
    x = 513,650,517,663.68/817,748.76
  6. Step 6: Final answer
    x = 628,127.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.