Home / 386,571,938,957.80-533,485,810,005.75-215,293,842,982.63

Finding the Fourth Proportional to 386,571,938,957.80, 533,485,810,005.75 and 215,293,842,982.63

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Solution

The fourth proportional to 386,571,938,957.80, 533,485,810,005.75 and 215,293,842,982.63 is: 297,114,711,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,571,938,957.80 : 533,485,810,005.75 = 215,293,842,982.63 : x
  2. Step 2: Convert to fraction form
    386,571,938,957.80/533,485,810,005.75 = 215,293,842,982.63/x
  3. Step 3: Cross multiply
    386,571,938,957.80x = 533,485,810,005.75 × 215,293,842,982.63
  4. Step 4: Simplify right side
    386,571,938,957.80x = 114,856,210,212,839,126,728,704
  5. Step 5: Solve for x
    x = 114,856,210,212,839,126,728,704/386,571,938,957.80
  6. Step 6: Final answer
    x = 297,114,711,746.78

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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.