Home / 640,408,548.66-883,858,585.23-405,481,008.66

Finding the Fourth Proportional to 640,408,548.66, 883,858,585.23 and 405,481,008.66

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Solution

The fourth proportional to 640,408,548.66, 883,858,585.23 and 405,481,008.66 is: 559,623,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,408,548.66 : 883,858,585.23 = 405,481,008.66 : x
  2. Step 2: Convert to fraction form
    640,408,548.66/883,858,585.23 = 405,481,008.66/x
  3. Step 3: Cross multiply
    640,408,548.66x = 883,858,585.23 × 405,481,008.66
  4. Step 4: Simplify right side
    640,408,548.66x = 358,387,870,651,860,992
  5. Step 5: Solve for x
    x = 358,387,870,651,860,992/640,408,548.66
  6. Step 6: Final answer
    x = 559,623,807.96

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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.