Home / 1,188,099.66-1,639,475.91-678,702.54

Finding the Fourth Proportional to 1,188,099.66, 1,639,475.91 and 678,702.54

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Solution

The fourth proportional to 1,188,099.66, 1,639,475.91 and 678,702.54 is: 936,551.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,099.66 : 1,639,475.91 = 678,702.54 : x
  2. Step 2: Convert to fraction form
    1,188,099.66/1,639,475.91 = 678,702.54/x
  3. Step 3: Cross multiply
    1,188,099.66x = 1,639,475.91 × 678,702.54
  4. Step 4: Simplify right side
    1,188,099.66x = 1,112,716,464,385.81
  5. Step 5: Solve for x
    x = 1,112,716,464,385.81/1,188,099.66
  6. Step 6: Final answer
    x = 936,551.45

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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.