Home / 713,628,987.79-1,071,494,278.24-399,111,228.41

Finding the Fourth Proportional to 713,628,987.79, 1,071,494,278.24 and 399,111,228.41

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Solution

The fourth proportional to 713,628,987.79, 1,071,494,278.24 and 399,111,228.41 is: 599,254,521.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,628,987.79 : 1,071,494,278.24 = 399,111,228.41 : x
  2. Step 2: Convert to fraction form
    713,628,987.79/1,071,494,278.24 = 399,111,228.41/x
  3. Step 3: Cross multiply
    713,628,987.79x = 1,071,494,278.24 × 399,111,228.41
  4. Step 4: Simplify right side
    713,628,987.79x = 427,645,397,622,652,736
  5. Step 5: Solve for x
    x = 427,645,397,622,652,736/713,628,987.79
  6. Step 6: Final answer
    x = 599,254,521.53

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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.