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Finding the Fourth Proportional to 612,357.72, 845,067.72 and 340,415.16

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Solution

The fourth proportional to 612,357.72, 845,067.72 and 340,415.16 is: 469,780.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,357.72 : 845,067.72 = 340,415.16 : x
  2. Step 2: Convert to fraction form
    612,357.72/845,067.72 = 340,415.16/x
  3. Step 3: Cross multiply
    612,357.72x = 845,067.72 × 340,415.16
  4. Step 4: Simplify right side
    612,357.72x = 287,673,863,114.64
  5. Step 5: Solve for x
    x = 287,673,863,114.64/612,357.72
  6. Step 6: Final answer
    x = 469,780.74

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1.5x scale

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.