Home / 881,301.76-1,216,214.40-478,919.68

Finding the Fourth Proportional to 881,301.76, 1,216,214.40 and 478,919.68

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Solution

The fourth proportional to 881,301.76, 1,216,214.40 and 478,919.68 is: 660,918.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,301.76 : 1,216,214.40 = 478,919.68 : x
  2. Step 2: Convert to fraction form
    881,301.76/1,216,214.40 = 478,919.68/x
  3. Step 3: Cross multiply
    881,301.76x = 1,216,214.40 × 478,919.68
  4. Step 4: Simplify right side
    881,301.76x = 582,469,011,259.39
  5. Step 5: Solve for x
    x = 582,469,011,259.39/881,301.76
  6. Step 6: Final answer
    x = 660,918.92

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1.5x scale

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.