Home / 386,571,938,953.03-533,485,809,999.20-215,293,842,977.88

Finding the Fourth Proportional to 386,571,938,953.03, 533,485,809,999.20 and 215,293,842,977.88

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Solution

The fourth proportional to 386,571,938,953.03, 533,485,809,999.20 and 215,293,842,977.88 is: 297,114,711,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,571,938,953.03 : 533,485,809,999.20 = 215,293,842,977.88 : x
  2. Step 2: Convert to fraction form
    386,571,938,953.03/533,485,809,999.20 = 215,293,842,977.88/x
  3. Step 3: Cross multiply
    386,571,938,953.03x = 533,485,809,999.20 × 215,293,842,977.88
  4. Step 4: Simplify right side
    386,571,938,953.03x = 114,856,210,208,894,887,133,184
  5. Step 5: Solve for x
    x = 114,856,210,208,894,887,133,184/386,571,938,953.03
  6. Step 6: Final answer
    x = 297,114,711,740.24

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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.