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Finding the Fourth Proportional to 608,429.80, 912,644.70 and 396,922.60

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Solution

The fourth proportional to 608,429.80, 912,644.70 and 396,922.60 is: 595,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,429.80 : 912,644.70 = 396,922.60 : x
  2. Step 2: Convert to fraction form
    608,429.80/912,644.70 = 396,922.60/x
  3. Step 3: Cross multiply
    608,429.80x = 912,644.70 × 396,922.60
  4. Step 4: Simplify right side
    608,429.80x = 362,249,307,200.22
  5. Step 5: Solve for x
    x = 362,249,307,200.22/608,429.80
  6. Step 6: Final answer
    x = 595,383.90

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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.