Home / 678,745.78-1,017,200.13-257,792.02

Finding the Fourth Proportional to 678,745.78, 1,017,200.13 and 257,792.02

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Solution

The fourth proportional to 678,745.78, 1,017,200.13 and 257,792.02 is: 386,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,745.78 : 1,017,200.13 = 257,792.02 : x
  2. Step 2: Convert to fraction form
    678,745.78/1,017,200.13 = 257,792.02/x
  3. Step 3: Cross multiply
    678,745.78x = 1,017,200.13 × 257,792.02
  4. Step 4: Simplify right side
    678,745.78x = 262,226,072,747.24
  5. Step 5: Solve for x
    x = 262,226,072,747.24/678,745.78
  6. Step 6: Final answer
    x = 386,339.16

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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.