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Finding the Fourth Proportional to 612,429.21, 845,133.84 and 340,503.12

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Solution

The fourth proportional to 612,429.21, 845,133.84 and 340,503.12 is: 469,884.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,429.21 : 845,133.84 = 340,503.12 : x
  2. Step 2: Convert to fraction form
    612,429.21/845,133.84 = 340,503.12/x
  3. Step 3: Cross multiply
    612,429.21x = 845,133.84 × 340,503.12
  4. Step 4: Simplify right side
    612,429.21x = 287,770,709,337.58
  5. Step 5: Solve for x
    x = 287,770,709,337.58/612,429.21
  6. Step 6: Final answer
    x = 469,884.04

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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.