Home / 642,343,623.89-886,434,200.88-363,885,147.42

Finding the Fourth Proportional to 642,343,623.89, 886,434,200.88 and 363,885,147.42

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Solution

The fourth proportional to 642,343,623.89, 886,434,200.88 and 363,885,147.42 is: 502,161,503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,343,623.89 : 886,434,200.88 = 363,885,147.42 : x
  2. Step 2: Convert to fraction form
    642,343,623.89/886,434,200.88 = 363,885,147.42/x
  3. Step 3: Cross multiply
    642,343,623.89x = 886,434,200.88 × 363,885,147.42
  4. Step 4: Simplify right side
    642,343,623.89x = 322,560,239,865,348,736
  5. Step 5: Solve for x
    x = 322,560,239,865,348,736/642,343,623.89
  6. Step 6: Final answer
    x = 502,161,503.39

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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.