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Finding the Fourth Proportional to 570,836.16, 787,436.64 and 449,530.56

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Solution

The fourth proportional to 570,836.16, 787,436.64 and 449,530.56 is: 620,102.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,836.16 : 787,436.64 = 449,530.56 : x
  2. Step 2: Convert to fraction form
    570,836.16/787,436.64 = 449,530.56/x
  3. Step 3: Cross multiply
    570,836.16x = 787,436.64 × 449,530.56
  4. Step 4: Simplify right side
    570,836.16x = 353,976,833,743.72
  5. Step 5: Solve for x
    x = 353,976,833,743.72/570,836.16
  6. Step 6: Final answer
    x = 620,102.33

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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.