Home / 1,119,642,969.80-1,678,232,736.30-392,257,267.40

Finding the Fourth Proportional to 1,119,642,969.80, 1,678,232,736.30 and 392,257,267.40

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Solution

The fourth proportional to 1,119,642,969.80, 1,678,232,736.30 and 392,257,267.40 is: 587,954,379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,642,969.80 : 1,678,232,736.30 = 392,257,267.40 : x
  2. Step 2: Convert to fraction form
    1,119,642,969.80/1,678,232,736.30 = 392,257,267.40/x
  3. Step 3: Cross multiply
    1,119,642,969.80x = 1,678,232,736.30 × 392,257,267.40
  4. Step 4: Simplify right side
    1,119,642,969.80x = 658,298,987,202,262,784
  5. Step 5: Solve for x
    x = 658,298,987,202,262,784/1,119,642,969.80
  6. Step 6: Final answer
    x = 587,954,379.17

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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.