Home / 678,869.63-1,018,435.57-258,112.79

Finding the Fourth Proportional to 678,869.63, 1,018,435.57 and 258,112.79

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Solution

The fourth proportional to 678,869.63, 1,018,435.57 and 258,112.79 is: 387,219.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,869.63 : 1,018,435.57 = 258,112.79 : x
  2. Step 2: Convert to fraction form
    678,869.63/1,018,435.57 = 258,112.79/x
  3. Step 3: Cross multiply
    678,869.63x = 1,018,435.57 × 258,112.79
  4. Step 4: Simplify right side
    678,869.63x = 262,871,240,670.48
  5. Step 5: Solve for x
    x = 262,871,240,670.48/678,869.63
  6. Step 6: Final answer
    x = 387,219.03

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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.