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Finding the Fourth Proportional to 612,751.26, 845,584.61 and 340,813.30

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Solution

The fourth proportional to 612,751.26, 845,584.61 and 340,813.30 is: 470,315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,751.26 : 845,584.61 = 340,813.30 : x
  2. Step 2: Convert to fraction form
    612,751.26/845,584.61 = 340,813.30/x
  3. Step 3: Cross multiply
    612,751.26x = 845,584.61 × 340,813.30
  4. Step 4: Simplify right side
    612,751.26x = 288,186,481,363.31
  5. Step 5: Solve for x
    x = 288,186,481,363.31/612,751.26
  6. Step 6: Final answer
    x = 470,315.61

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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.