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Finding the Fourth Proportional to 653,297.92, 901,528.32 and 399,074.56

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Solution

The fourth proportional to 653,297.92, 901,528.32 and 399,074.56 is: 550,708.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,297.92 : 901,528.32 = 399,074.56 : x
  2. Step 2: Convert to fraction form
    653,297.92/901,528.32 = 399,074.56/x
  3. Step 3: Cross multiply
    653,297.92x = 901,528.32 × 399,074.56
  4. Step 4: Simplify right side
    653,297.92x = 359,777,017,631.54
  5. Step 5: Solve for x
    x = 359,777,017,631.54/653,297.92
  6. Step 6: Final answer
    x = 550,708.96

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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.