Home / 497,520,220.80-686,798,089.44-321,394,112.16

Finding the Fourth Proportional to 497,520,220.80, 686,798,089.44 and 321,394,112.16

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Solution

The fourth proportional to 497,520,220.80, 686,798,089.44 and 321,394,112.16 is: 443,666,112.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,520,220.80 : 686,798,089.44 = 321,394,112.16 : x
  2. Step 2: Convert to fraction form
    497,520,220.80/686,798,089.44 = 321,394,112.16/x
  3. Step 3: Cross multiply
    497,520,220.80x = 686,798,089.44 × 321,394,112.16
  4. Step 4: Simplify right side
    497,520,220.80x = 220,732,862,188,753,120
  5. Step 5: Solve for x
    x = 220,732,862,188,753,120/497,520,220.80
  6. Step 6: Final answer
    x = 443,666,112.37

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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.