Home / 642,343,624.89-886,434,202.26-363,885,148.42

Finding the Fourth Proportional to 642,343,624.89, 886,434,202.26 and 363,885,148.42

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Solution

The fourth proportional to 642,343,624.89, 886,434,202.26 and 363,885,148.42 is: 502,161,504.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,343,624.89 : 886,434,202.26 = 363,885,148.42 : x
  2. Step 2: Convert to fraction form
    642,343,624.89/886,434,202.26 = 363,885,148.42/x
  3. Step 3: Cross multiply
    642,343,624.89x = 886,434,202.26 × 363,885,148.42
  4. Step 4: Simplify right side
    642,343,624.89x = 322,560,241,253,944,384
  5. Step 5: Solve for x
    x = 322,560,241,253,944,384/642,343,624.89
  6. Step 6: Final answer
    x = 502,161,504.77

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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.