Home / 678,918.90-1,018,525.23-258,202.74

Finding the Fourth Proportional to 678,918.90, 1,018,525.23 and 258,202.74

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Solution

The fourth proportional to 678,918.90, 1,018,525.23 and 258,202.74 is: 387,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,918.90 : 1,018,525.23 = 258,202.74 : x
  2. Step 2: Convert to fraction form
    678,918.90/1,018,525.23 = 258,202.74/x
  3. Step 3: Cross multiply
    678,918.90x = 1,018,525.23 × 258,202.74
  4. Step 4: Simplify right side
    678,918.90x = 262,986,005,145.13
  5. Step 5: Solve for x
    x = 262,986,005,145.13/678,918.90
  6. Step 6: Final answer
    x = 387,359.97

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1.5x scale

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.