Home / 721,225,408.85-1,081,562,340.61-393,525,768.31

Finding the Fourth Proportional to 721,225,408.85, 1,081,562,340.61 and 393,525,768.31

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Solution

The fourth proportional to 721,225,408.85, 1,081,562,340.61 and 393,525,768.31 is: 590,138,181.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,225,408.85 : 1,081,562,340.61 = 393,525,768.31 : x
  2. Step 2: Convert to fraction form
    721,225,408.85/1,081,562,340.61 = 393,525,768.31/x
  3. Step 3: Cross multiply
    721,225,408.85x = 1,081,562,340.61 × 393,525,768.31
  4. Step 4: Simplify right side
    721,225,408.85x = 425,622,651,056,336,768
  5. Step 5: Solve for x
    x = 425,622,651,056,336,768/721,225,408.85
  6. Step 6: Final answer
    x = 590,138,181.26

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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.