Home / 678,990.60-936,905.03-373,079.87

Finding the Fourth Proportional to 678,990.60, 936,905.03 and 373,079.87

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Solution

The fourth proportional to 678,990.60, 936,905.03 and 373,079.87 is: 514,794.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,990.60 : 936,905.03 = 373,079.87 : x
  2. Step 2: Convert to fraction form
    678,990.60/936,905.03 = 373,079.87/x
  3. Step 3: Cross multiply
    678,990.60x = 936,905.03 × 373,079.87
  4. Step 4: Simplify right side
    678,990.60x = 349,540,410,427.36
  5. Step 5: Solve for x
    x = 349,540,410,427.36/678,990.60
  6. Step 6: Final answer
    x = 514,794.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.