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Finding the Fourth Proportional to 484,453.44, 668,474.76 and 290,820.12

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Solution

The fourth proportional to 484,453.44, 668,474.76 and 290,820.12 is: 401,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,453.44 : 668,474.76 = 290,820.12 : x
  2. Step 2: Convert to fraction form
    484,453.44/668,474.76 = 290,820.12/x
  3. Step 3: Cross multiply
    484,453.44x = 668,474.76 × 290,820.12
  4. Step 4: Simplify right side
    484,453.44x = 194,405,909,920.17
  5. Step 5: Solve for x
    x = 194,405,909,920.17/484,453.44
  6. Step 6: Final answer
    x = 401,289.15

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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.