Home / 685,218,291.73-945,574,002.06-387,922,203.96

Finding the Fourth Proportional to 685,218,291.73, 945,574,002.06 and 387,922,203.96

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Solution

The fourth proportional to 685,218,291.73, 945,574,002.06 and 387,922,203.96 is: 535,317,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,218,291.73 : 945,574,002.06 = 387,922,203.96 : x
  2. Step 2: Convert to fraction form
    685,218,291.73/945,574,002.06 = 387,922,203.96/x
  3. Step 3: Cross multiply
    685,218,291.73x = 945,574,002.06 × 387,922,203.96
  4. Step 4: Simplify right side
    685,218,291.73x = 366,809,150,888,901,440
  5. Step 5: Solve for x
    x = 366,809,150,888,901,440/685,218,291.73
  6. Step 6: Final answer
    x = 535,317,219.80

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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.