Home / 411,212,615.08-616,821,022.54-138,585,744.04

Finding the Fourth Proportional to 411,212,615.08, 616,821,022.54 and 138,585,744.04

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Solution

The fourth proportional to 411,212,615.08, 616,821,022.54 and 138,585,744.04 is: 207,879,323.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,212,615.08 : 616,821,022.54 = 138,585,744.04 : x
  2. Step 2: Convert to fraction form
    411,212,615.08/616,821,022.54 = 138,585,744.04/x
  3. Step 3: Cross multiply
    411,212,615.08x = 616,821,022.54 × 138,585,744.04
  4. Step 4: Simplify right side
    411,212,615.08x = 85,482,600,348,219,504
  5. Step 5: Solve for x
    x = 85,482,600,348,219,504/411,212,615.08
  6. Step 6: Final answer
    x = 207,879,323.77

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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.