Home / 687,903,354.86-1,031,777,759.75-189,984,654.97

Finding the Fourth Proportional to 687,903,354.86, 1,031,777,759.75 and 189,984,654.97

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Solution

The fourth proportional to 687,903,354.86, 1,031,777,759.75 and 189,984,654.97 is: 284,955,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,903,354.86 : 1,031,777,759.75 = 189,984,654.97 : x
  2. Step 2: Convert to fraction form
    687,903,354.86/1,031,777,759.75 = 189,984,654.97/x
  3. Step 3: Cross multiply
    687,903,354.86x = 1,031,777,759.75 × 189,984,654.97
  4. Step 4: Simplify right side
    687,903,354.86x = 196,021,941,688,293,952
  5. Step 5: Solve for x
    x = 196,021,941,688,293,952/687,903,354.86
  6. Step 6: Final answer
    x = 284,955,641.38

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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.