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Finding the Fourth Proportional to 1,790,425, 2,470,786.50 and 985,609

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Solution

The fourth proportional to 1,790,425, 2,470,786.50 and 985,609 is: 1,360,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790,425 : 2,470,786.50 = 985,609 : x
  2. Step 2: Convert to fraction form
    1,790,425/2,470,786.50 = 985,609/x
  3. Step 3: Cross multiply
    1,790,425x = 2,470,786.50 × 985,609
  4. Step 4: Simplify right side
    1,790,425x = 2,435,229,411,478.50
  5. Step 5: Solve for x
    x = 2,435,229,411,478.50/1,790,425
  6. Step 6: Final answer
    x = 1,360,140.42

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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.