Home / 515,723.44-774,150.88-409,788.40

Finding the Fourth Proportional to 515,723.44, 774,150.88 and 409,788.40

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Solution

The fourth proportional to 515,723.44, 774,150.88 and 409,788.40 is: 615,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,723.44 : 774,150.88 = 409,788.40 : x
  2. Step 2: Convert to fraction form
    515,723.44/774,150.88 = 409,788.40/x
  3. Step 3: Cross multiply
    515,723.44x = 774,150.88 × 409,788.40
  4. Step 4: Simplify right side
    515,723.44x = 317,238,050,473.79
  5. Step 5: Solve for x
    x = 317,238,050,473.79/515,723.44
  6. Step 6: Final answer
    x = 615,132.12

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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.