Home / 1,247,988.63-1,870,834.77-678,537.57

Finding the Fourth Proportional to 1,247,988.63, 1,870,834.77 and 678,537.57

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Solution

The fourth proportional to 1,247,988.63, 1,870,834.77 and 678,537.57 is: 1,017,182.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,988.63 : 1,870,834.77 = 678,537.57 : x
  2. Step 2: Convert to fraction form
    1,247,988.63/1,870,834.77 = 678,537.57/x
  3. Step 3: Cross multiply
    1,247,988.63x = 1,870,834.77 × 678,537.57
  4. Step 4: Simplify right side
    1,247,988.63x = 1,269,431,678,707.31
  5. Step 5: Solve for x
    x = 1,269,431,678,707.31/1,247,988.63
  6. Step 6: Final answer
    x = 1,017,182.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.