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Finding the Fourth Proportional to 403,969.05, 603,481.62 and 290,682.45

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Solution

The fourth proportional to 403,969.05, 603,481.62 and 290,682.45 is: 434,244.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,969.05 : 603,481.62 = 290,682.45 : x
  2. Step 2: Convert to fraction form
    403,969.05/603,481.62 = 290,682.45/x
  3. Step 3: Cross multiply
    403,969.05x = 603,481.62 × 290,682.45
  4. Step 4: Simplify right side
    403,969.05x = 175,421,515,831.57
  5. Step 5: Solve for x
    x = 175,421,515,831.57/403,969.05
  6. Step 6: Final answer
    x = 434,244.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.