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Finding the Fourth Proportional to 612,278.63, 845,081.62 and 340,441.82

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Solution

The fourth proportional to 612,278.63, 845,081.62 and 340,441.82 is: 469,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,278.63 : 845,081.62 = 340,441.82 : x
  2. Step 2: Convert to fraction form
    612,278.63/845,081.62 = 340,441.82/x
  3. Step 3: Cross multiply
    612,278.63x = 845,081.62 × 340,441.82
  4. Step 4: Simplify right side
    612,278.63x = 287,701,123,059.14
  5. Step 5: Solve for x
    x = 287,701,123,059.14/612,278.63
  6. Step 6: Final answer
    x = 469,885.95

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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.