Home / 678,859.08-1,018,419.98-258,102.15

Finding the Fourth Proportional to 678,859.08, 1,018,419.98 and 258,102.15

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Solution

The fourth proportional to 678,859.08, 1,018,419.98 and 258,102.15 is: 387,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,859.08 : 1,018,419.98 = 258,102.15 : x
  2. Step 2: Convert to fraction form
    678,859.08/1,018,419.98 = 258,102.15/x
  3. Step 3: Cross multiply
    678,859.08x = 1,018,419.98 × 258,102.15
  4. Step 4: Simplify right side
    678,859.08x = 262,856,381,331.37
  5. Step 5: Solve for x
    x = 262,856,381,331.37/678,859.08
  6. Step 6: Final answer
    x = 387,203.16

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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.