Home / 1,348,930.36-1,861,911.78-890,379.64

Finding the Fourth Proportional to 1,348,930.36, 1,861,911.78 and 890,379.64

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Solution

The fourth proportional to 1,348,930.36, 1,861,911.78 and 890,379.64 is: 1,228,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348,930.36 : 1,861,911.78 = 890,379.64 : x
  2. Step 2: Convert to fraction form
    1,348,930.36/1,861,911.78 = 890,379.64/x
  3. Step 3: Cross multiply
    1,348,930.36x = 1,861,911.78 × 890,379.64
  4. Step 4: Simplify right side
    1,348,930.36x = 1,657,808,340,388.16
  5. Step 5: Solve for x
    x = 1,657,808,340,388.16/1,348,930.36
  6. Step 6: Final answer
    x = 1,228,979.93

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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.