Home / 766,185.63-1,148,489.88-339,922.20

Finding the Fourth Proportional to 766,185.63, 1,148,489.88 and 339,922.20

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Solution

The fourth proportional to 766,185.63, 1,148,489.88 and 339,922.20 is: 509,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,185.63 : 1,148,489.88 = 339,922.20 : x
  2. Step 2: Convert to fraction form
    766,185.63/1,148,489.88 = 339,922.20/x
  3. Step 3: Cross multiply
    766,185.63x = 1,148,489.88 × 339,922.20
  4. Step 4: Simplify right side
    766,185.63x = 390,397,204,987.73
  5. Step 5: Solve for x
    x = 390,397,204,987.73/766,185.63
  6. Step 6: Final answer
    x = 509,533.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.