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Finding the Fourth Proportional to 612,425.88, 845,175.86 and 340,521.68

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Solution

The fourth proportional to 612,425.88, 845,175.86 and 340,521.68 is: 469,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,425.88 : 845,175.86 = 340,521.68 : x
  2. Step 2: Convert to fraction form
    612,425.88/845,175.86 = 340,521.68/x
  3. Step 3: Cross multiply
    612,425.88x = 845,175.86 × 340,521.68
  4. Step 4: Simplify right side
    612,425.88x = 287,800,703,742.65
  5. Step 5: Solve for x
    x = 287,800,703,742.65/612,425.88
  6. Step 6: Final answer
    x = 469,935.57

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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.