Home / 781,213.96-1,078,083.72-458,937.64

Finding the Fourth Proportional to 781,213.96, 1,078,083.72 and 458,937.64

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Solution

The fourth proportional to 781,213.96, 1,078,083.72 and 458,937.64 is: 633,338.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,213.96 : 1,078,083.72 = 458,937.64 : x
  2. Step 2: Convert to fraction form
    781,213.96/1,078,083.72 = 458,937.64/x
  3. Step 3: Cross multiply
    781,213.96x = 1,078,083.72 × 458,937.64
  4. Step 4: Simplify right side
    781,213.96x = 494,773,198,179.22
  5. Step 5: Solve for x
    x = 494,773,198,179.22/781,213.96
  6. Step 6: Final answer
    x = 633,338.91

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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.