Home / 678,914.40-1,018,518.48-258,198.24

Finding the Fourth Proportional to 678,914.40, 1,018,518.48 and 258,198.24

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Solution

The fourth proportional to 678,914.40, 1,018,518.48 and 258,198.24 is: 387,353.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,914.40 : 1,018,518.48 = 258,198.24 : x
  2. Step 2: Convert to fraction form
    678,914.40/1,018,518.48 = 258,198.24/x
  3. Step 3: Cross multiply
    678,914.40x = 1,018,518.48 × 258,198.24
  4. Step 4: Simplify right side
    678,914.40x = 262,979,678,943.48
  5. Step 5: Solve for x
    x = 262,979,678,943.48/678,914.40
  6. Step 6: Final answer
    x = 387,353.22

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Double scale
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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.