Home / 731,644,858.40-1,009,642,868.42-397,110,198.29

Finding the Fourth Proportional to 731,644,858.40, 1,009,642,868.42 and 397,110,198.29

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Solution

The fourth proportional to 731,644,858.40, 1,009,642,868.42 and 397,110,198.29 is: 547,997,399.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,644,858.40 : 1,009,642,868.42 = 397,110,198.29 : x
  2. Step 2: Convert to fraction form
    731,644,858.40/1,009,642,868.42 = 397,110,198.29/x
  3. Step 3: Cross multiply
    731,644,858.40x = 1,009,642,868.42 × 397,110,198.29
  4. Step 4: Simplify right side
    731,644,858.40x = 400,939,479,673,316,800
  5. Step 5: Solve for x
    x = 400,939,479,673,316,800/731,644,858.40
  6. Step 6: Final answer
    x = 547,997,399.38

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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.