Home / 678,556.40-1,018,340.04-258,652.40

Finding the Fourth Proportional to 678,556.40, 1,018,340.04 and 258,652.40

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Solution

The fourth proportional to 678,556.40, 1,018,340.04 and 258,652.40 is: 388,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,556.40 : 1,018,340.04 = 258,652.40 : x
  2. Step 2: Convert to fraction form
    678,556.40/1,018,340.04 = 258,652.40/x
  3. Step 3: Cross multiply
    678,556.40x = 1,018,340.04 × 258,652.40
  4. Step 4: Simplify right side
    678,556.40x = 263,396,095,362.10
  5. Step 5: Solve for x
    x = 263,396,095,362.10/678,556.40
  6. Step 6: Final answer
    x = 388,171.26

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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.