Home / 705,106,396.89-972,021,296.10-492,753,932.01

Finding the Fourth Proportional to 705,106,396.89, 972,021,296.10 and 492,753,932.01

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Solution

The fourth proportional to 705,106,396.89, 972,021,296.10 and 492,753,932.01 is: 679,283,747.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,106,396.89 : 972,021,296.10 = 492,753,932.01 : x
  2. Step 2: Convert to fraction form
    705,106,396.89/972,021,296.10 = 492,753,932.01/x
  3. Step 3: Cross multiply
    705,106,396.89x = 972,021,296.10 × 492,753,932.01
  4. Step 4: Simplify right side
    705,106,396.89x = 478,967,315,650,731,456
  5. Step 5: Solve for x
    x = 478,967,315,650,731,456/705,106,396.89
  6. Step 6: Final answer
    x = 679,283,747.48

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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.