Home / 1,118,702.79-1,678,297.18-408,729.69

Finding the Fourth Proportional to 1,118,702.79, 1,678,297.18 and 408,729.69

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Solution

The fourth proportional to 1,118,702.79, 1,678,297.18 and 408,729.69 is: 613,183.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,702.79 : 1,678,297.18 = 408,729.69 : x
  2. Step 2: Convert to fraction form
    1,118,702.79/1,678,297.18 = 408,729.69/x
  3. Step 3: Cross multiply
    1,118,702.79x = 1,678,297.18 × 408,729.69
  4. Step 4: Simplify right side
    1,118,702.79x = 685,969,886,109.27
  5. Step 5: Solve for x
    x = 685,969,886,109.27/1,118,702.79
  6. Step 6: Final answer
    x = 613,183.32

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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.