Home / 728,709,939.40-1,093,064,909.10-658,418,009.80

Finding the Fourth Proportional to 728,709,939.40, 1,093,064,909.10 and 658,418,009.80

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Solution

The fourth proportional to 728,709,939.40, 1,093,064,909.10 and 658,418,009.80 is: 987,627,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,709,939.40 : 1,093,064,909.10 = 658,418,009.80 : x
  2. Step 2: Convert to fraction form
    728,709,939.40/1,093,064,909.10 = 658,418,009.80/x
  3. Step 3: Cross multiply
    728,709,939.40x = 1,093,064,909.10 × 658,418,009.80
  4. Step 4: Simplify right side
    728,709,939.40x = 719,693,622,031,839,744
  5. Step 5: Solve for x
    x = 719,693,622,031,839,744/728,709,939.40
  6. Step 6: Final answer
    x = 987,627,014.70

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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.