Home / 878,111,768.74-1,211,795,972.20-481,637,985.06

Finding the Fourth Proportional to 878,111,768.74, 1,211,795,972.20 and 481,637,985.06

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Solution

The fourth proportional to 878,111,768.74, 1,211,795,972.20 and 481,637,985.06 is: 664,661,369.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,111,768.74 : 1,211,795,972.20 = 481,637,985.06 : x
  2. Step 2: Convert to fraction form
    878,111,768.74/1,211,795,972.20 = 481,637,985.06/x
  3. Step 3: Cross multiply
    878,111,768.74x = 1,211,795,972.20 × 481,637,985.06
  4. Step 4: Simplify right side
    878,111,768.74x = 583,646,970,354,231,808
  5. Step 5: Solve for x
    x = 583,646,970,354,231,808/878,111,768.74
  6. Step 6: Final answer
    x = 664,661,369.01

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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.