Home / 418,698,656.76-628,141,655.76-127,588,563

Finding the Fourth Proportional to 418,698,656.76, 628,141,655.76 and 127,588,563

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Solution

The fourth proportional to 418,698,656.76, 628,141,655.76 and 127,588,563 is: 191,411,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,698,656.76 : 628,141,655.76 = 127,588,563 : x
  2. Step 2: Convert to fraction form
    418,698,656.76/628,141,655.76 = 127,588,563/x
  3. Step 3: Cross multiply
    418,698,656.76x = 628,141,655.76 × 127,588,563
  4. Step 4: Simplify right side
    418,698,656.76x = 80,143,691,218,859,072
  5. Step 5: Solve for x
    x = 80,143,691,218,859,072/418,698,656.76
  6. Step 6: Final answer
    x = 191,411,388.42

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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.