Home / 1,294,708,017.80-1,940,786,568.30-639,760,129.40

Finding the Fourth Proportional to 1,294,708,017.80, 1,940,786,568.30 and 639,760,129.40

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Solution

The fourth proportional to 1,294,708,017.80, 1,940,786,568.30 and 639,760,129.40 is: 959,009,945.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,708,017.80 : 1,940,786,568.30 = 639,760,129.40 : x
  2. Step 2: Convert to fraction form
    1,294,708,017.80/1,940,786,568.30 = 639,760,129.40/x
  3. Step 3: Cross multiply
    1,294,708,017.80x = 1,940,786,568.30 × 639,760,129.40
  4. Step 4: Simplify right side
    1,294,708,017.80x = 1,241,637,866,073,389,824
  5. Step 5: Solve for x
    x = 1,241,637,866,073,389,824/1,294,708,017.80
  6. Step 6: Final answer
    x = 959,009,945.87

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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.