Home / 821,128.89-1,133,160.56-458,566.21

Finding the Fourth Proportional to 821,128.89, 1,133,160.56 and 458,566.21

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Solution

The fourth proportional to 821,128.89, 1,133,160.56 and 458,566.21 is: 632,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,128.89 : 1,133,160.56 = 458,566.21 : x
  2. Step 2: Convert to fraction form
    821,128.89/1,133,160.56 = 458,566.21/x
  3. Step 3: Cross multiply
    821,128.89x = 1,133,160.56 × 458,566.21
  4. Step 4: Simplify right side
    821,128.89x = 519,629,145,453.64
  5. Step 5: Solve for x
    x = 519,629,145,453.64/821,128.89
  6. Step 6: Final answer
    x = 632,822.87

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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.