Home / 678,820.50-1,018,361.77-258,063.57

Finding the Fourth Proportional to 678,820.50, 1,018,361.77 and 258,063.57

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Solution

The fourth proportional to 678,820.50, 1,018,361.77 and 258,063.57 is: 387,145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,820.50 : 1,018,361.77 = 258,063.57 : x
  2. Step 2: Convert to fraction form
    678,820.50/1,018,361.77 = 258,063.57/x
  3. Step 3: Cross multiply
    678,820.50x = 1,018,361.77 × 258,063.57
  4. Step 4: Simplify right side
    678,820.50x = 262,802,073,272.56
  5. Step 5: Solve for x
    x = 262,802,073,272.56/678,820.50
  6. Step 6: Final answer
    x = 387,145.16

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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.