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Finding the Fourth Proportional to 486,870.42, 729,216.63 and 281,453.39

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Solution

The fourth proportional to 486,870.42, 729,216.63 and 281,453.39 is: 421,550.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,870.42 : 729,216.63 = 281,453.39 : x
  2. Step 2: Convert to fraction form
    486,870.42/729,216.63 = 281,453.39/x
  3. Step 3: Cross multiply
    486,870.42x = 729,216.63 × 281,453.39
  4. Step 4: Simplify right side
    486,870.42x = 205,240,488,911.79
  5. Step 5: Solve for x
    x = 205,240,488,911.79/486,870.42
  6. Step 6: Final answer
    x = 421,550.54

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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.