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Finding the Fourth Proportional to 612,391.16, 845,051.92 and 340,442.50

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Solution

The fourth proportional to 612,391.16, 845,051.92 and 340,442.50 is: 469,784.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,391.16 : 845,051.92 = 340,442.50 : x
  2. Step 2: Convert to fraction form
    612,391.16/845,051.92 = 340,442.50/x
  3. Step 3: Cross multiply
    612,391.16x = 845,051.92 × 340,442.50
  4. Step 4: Simplify right side
    612,391.16x = 287,691,588,274.60
  5. Step 5: Solve for x
    x = 287,691,588,274.60/612,391.16
  6. Step 6: Final answer
    x = 469,784.03

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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.