Home / 636,520,987,637.80-878,394,494,423.10-347,489,247,014.74

Finding the Fourth Proportional to 636,520,987,637.80, 878,394,494,423.10 and 347,489,247,014.74

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Solution

The fourth proportional to 636,520,987,637.80, 878,394,494,423.10 and 347,489,247,014.74 is: 479,532,721,429.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,520,987,637.80 : 878,394,494,423.10 = 347,489,247,014.74 : x
  2. Step 2: Convert to fraction form
    636,520,987,637.80/878,394,494,423.10 = 347,489,247,014.74/x
  3. Step 3: Cross multiply
    636,520,987,637.80x = 878,394,494,423.10 × 347,489,247,014.74
  4. Step 4: Simplify right side
    636,520,987,637.80x = 305,232,641,448,976,213,606,400
  5. Step 5: Solve for x
    x = 305,232,641,448,976,213,606,400/636,520,987,637.80
  6. Step 6: Final answer
    x = 479,532,721,429.55

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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.