Home / 1,108,279.80-1,662,419.70-398,379.60

Finding the Fourth Proportional to 1,108,279.80, 1,662,419.70 and 398,379.60

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Solution

The fourth proportional to 1,108,279.80, 1,662,419.70 and 398,379.60 is: 597,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,279.80 : 1,662,419.70 = 398,379.60 : x
  2. Step 2: Convert to fraction form
    1,108,279.80/1,662,419.70 = 398,379.60/x
  3. Step 3: Cross multiply
    1,108,279.80x = 1,662,419.70 × 398,379.60
  4. Step 4: Simplify right side
    1,108,279.80x = 662,274,095,118.12
  5. Step 5: Solve for x
    x = 662,274,095,118.12/1,108,279.80
  6. Step 6: Final answer
    x = 597,569.40

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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.