Home / 857,256.45-1,183,052.31-489,765.75

Finding the Fourth Proportional to 857,256.45, 1,183,052.31 and 489,765.75

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Solution

The fourth proportional to 857,256.45, 1,183,052.31 and 489,765.75 is: 675,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,256.45 : 1,183,052.31 = 489,765.75 : x
  2. Step 2: Convert to fraction form
    857,256.45/1,183,052.31 = 489,765.75/x
  3. Step 3: Cross multiply
    857,256.45x = 1,183,052.31 × 489,765.75
  4. Step 4: Simplify right side
    857,256.45x = 579,418,501,896.38
  5. Step 5: Solve for x
    x = 579,418,501,896.38/857,256.45
  6. Step 6: Final answer
    x = 675,898.68

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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.