Home / 636,520,987,638.30-878,394,494,423.80-347,489,247,015.24

Finding the Fourth Proportional to 636,520,987,638.30, 878,394,494,423.80 and 347,489,247,015.24

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Solution

The fourth proportional to 636,520,987,638.30, 878,394,494,423.80 and 347,489,247,015.24 is: 479,532,721,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,520,987,638.30 : 878,394,494,423.80 = 347,489,247,015.24 : x
  2. Step 2: Convert to fraction form
    636,520,987,638.30/878,394,494,423.80 = 347,489,247,015.24/x
  3. Step 3: Cross multiply
    636,520,987,638.30x = 878,394,494,423.80 × 347,489,247,015.24
  4. Step 4: Simplify right side
    636,520,987,638.30x = 305,232,641,449,658,710,753,280
  5. Step 5: Solve for x
    x = 305,232,641,449,658,710,753,280/636,520,987,638.30
  6. Step 6: Final answer
    x = 479,532,721,430.24

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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.