Home / 678,391.08-1,017,734.22-205,064.13

Finding the Fourth Proportional to 678,391.08, 1,017,734.22 and 205,064.13

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Solution

The fourth proportional to 678,391.08, 1,017,734.22 and 205,064.13 is: 307,640.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,391.08 : 1,017,734.22 = 205,064.13 : x
  2. Step 2: Convert to fraction form
    678,391.08/1,017,734.22 = 205,064.13/x
  3. Step 3: Cross multiply
    678,391.08x = 1,017,734.22 × 205,064.13
  4. Step 4: Simplify right side
    678,391.08x = 208,700,782,395.53
  5. Step 5: Solve for x
    x = 208,700,782,395.53/678,391.08
  6. Step 6: Final answer
    x = 307,640.81

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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.