Home / 766,290.23-1,057,438.95-422,059.16

Finding the Fourth Proportional to 766,290.23, 1,057,438.95 and 422,059.16

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Solution

The fourth proportional to 766,290.23, 1,057,438.95 and 422,059.16 is: 582,418.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,290.23 : 1,057,438.95 = 422,059.16 : x
  2. Step 2: Convert to fraction form
    766,290.23/1,057,438.95 = 422,059.16/x
  3. Step 3: Cross multiply
    766,290.23x = 1,057,438.95 × 422,059.16
  4. Step 4: Simplify right side
    766,290.23x = 446,301,789,701.09
  5. Step 5: Solve for x
    x = 446,301,789,701.09/766,290.23
  6. Step 6: Final answer
    x = 582,418.74

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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.