Home / 1,187,317,660,986.40-1,780,976,491,479.60-621,136,575,392.80

Finding the Fourth Proportional to 1,187,317,660,986.40, 1,780,976,491,479.60 and 621,136,575,392.80

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Solution

The fourth proportional to 1,187,317,660,986.40, 1,780,976,491,479.60 and 621,136,575,392.80 is: 931,704,863,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,317,660,986.40 : 1,780,976,491,479.60 = 621,136,575,392.80 : x
  2. Step 2: Convert to fraction form
    1,187,317,660,986.40/1,780,976,491,479.60 = 621,136,575,392.80/x
  3. Step 3: Cross multiply
    1,187,317,660,986.40x = 1,780,976,491,479.60 × 621,136,575,392.80
  4. Step 4: Simplify right side
    1,187,317,660,986.40x = 1,106,229,638,772,723,095,175,168
  5. Step 5: Solve for x
    x = 1,106,229,638,772,723,095,175,168/1,187,317,660,986.40
  6. Step 6: Final answer
    x = 931,704,863,089.20

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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.