Home / 685,167,751.77-945,507,033.07-387,803,609.45

Finding the Fourth Proportional to 685,167,751.77, 945,507,033.07 and 387,803,609.45

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Solution

The fourth proportional to 685,167,751.77, 945,507,033.07 and 387,803,609.45 is: 535,155,134.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,167,751.77 : 945,507,033.07 = 387,803,609.45 : x
  2. Step 2: Convert to fraction form
    685,167,751.77/945,507,033.07 = 387,803,609.45/x
  3. Step 3: Cross multiply
    685,167,751.77x = 945,507,033.07 × 387,803,609.45
  4. Step 4: Simplify right side
    685,167,751.77x = 366,671,040,179,946,304
  5. Step 5: Solve for x
    x = 366,671,040,179,946,304/685,167,751.77
  6. Step 6: Final answer
    x = 535,155,134.25

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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.