Home / 515,451.16-711,322.38-300,549.72

Finding the Fourth Proportional to 515,451.16, 711,322.38 and 300,549.72

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Solution

The fourth proportional to 515,451.16, 711,322.38 and 300,549.72 is: 414,758.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,451.16 : 711,322.38 = 300,549.72 : x
  2. Step 2: Convert to fraction form
    515,451.16/711,322.38 = 300,549.72/x
  3. Step 3: Cross multiply
    515,451.16x = 711,322.38 × 300,549.72
  4. Step 4: Simplify right side
    515,451.16x = 213,787,742,138.73
  5. Step 5: Solve for x
    x = 213,787,742,138.73/515,451.16
  6. Step 6: Final answer
    x = 414,758.48

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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.