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Finding the Fourth Proportional to 612,473.08, 845,208.42 and 340,538.87

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Solution

The fourth proportional to 612,473.08, 845,208.42 and 340,538.87 is: 469,941.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,473.08 : 845,208.42 = 340,538.87 : x
  2. Step 2: Convert to fraction form
    612,473.08/845,208.42 = 340,538.87/x
  3. Step 3: Cross multiply
    612,473.08x = 845,208.42 × 340,538.87
  4. Step 4: Simplify right side
    612,473.08x = 287,826,320,261.29
  5. Step 5: Solve for x
    x = 287,826,320,261.29/612,473.08
  6. Step 6: Final answer
    x = 469,941.18

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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.