Home / 639,928,262,815.75-959,220,458,820-215,309,111,288.49

Finding the Fourth Proportional to 639,928,262,815.75, 959,220,458,820 and 215,309,111,288.49

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Solution

The fourth proportional to 639,928,262,815.75, 959,220,458,820 and 215,309,111,288.49 is: 322,737,588,756.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,928,262,815.75 : 959,220,458,820 = 215,309,111,288.49 : x
  2. Step 2: Convert to fraction form
    639,928,262,815.75/959,220,458,820 = 215,309,111,288.49/x
  3. Step 3: Cross multiply
    639,928,262,815.75x = 959,220,458,820 × 215,309,111,288.49
  4. Step 4: Simplify right side
    639,928,262,815.75x = 206,528,904,518,271,825,346,560
  5. Step 5: Solve for x
    x = 206,528,904,518,271,825,346,560/639,928,262,815.75
  6. Step 6: Final answer
    x = 322,737,588,756.47

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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.