Home / 821,216.40-1,132,628.04-498,917.40

Finding the Fourth Proportional to 821,216.40, 1,132,628.04 and 498,917.40

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Solution

The fourth proportional to 821,216.40, 1,132,628.04 and 498,917.40 is: 688,110.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,216.40 : 1,132,628.04 = 498,917.40 : x
  2. Step 2: Convert to fraction form
    821,216.40/1,132,628.04 = 498,917.40/x
  3. Step 3: Cross multiply
    821,216.40x = 1,132,628.04 × 498,917.40
  4. Step 4: Simplify right side
    821,216.40x = 565,087,836,883.90
  5. Step 5: Solve for x
    x = 565,087,836,883.90/821,216.40
  6. Step 6: Final answer
    x = 688,110.75

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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.