Home / 555,721,741.44-766,772,438.40-320,722,623.36

Finding the Fourth Proportional to 555,721,741.44, 766,772,438.40 and 320,722,623.36

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Solution

The fourth proportional to 555,721,741.44, 766,772,438.40 and 320,722,623.36 is: 442,525,907.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,721,741.44 : 766,772,438.40 = 320,722,623.36 : x
  2. Step 2: Convert to fraction form
    555,721,741.44/766,772,438.40 = 320,722,623.36/x
  3. Step 3: Cross multiply
    555,721,741.44x = 766,772,438.40 × 320,722,623.36
  4. Step 4: Simplify right side
    555,721,741.44x = 245,921,267,963,792,000
  5. Step 5: Solve for x
    x = 245,921,267,963,792,000/555,721,741.44
  6. Step 6: Final answer
    x = 442,525,907.53

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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.