Home / 1,321,012,988.42-1,822,890,104.66-777,768,185.59

Finding the Fourth Proportional to 1,321,012,988.42, 1,822,890,104.66 and 777,768,185.59

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Solution

The fourth proportional to 1,321,012,988.42, 1,822,890,104.66 and 777,768,185.59 is: 1,073,256,615.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,012,988.42 : 1,822,890,104.66 = 777,768,185.59 : x
  2. Step 2: Convert to fraction form
    1,321,012,988.42/1,822,890,104.66 = 777,768,185.59/x
  3. Step 3: Cross multiply
    1,321,012,988.42x = 1,822,890,104.66 × 777,768,185.59
  4. Step 4: Simplify right side
    1,321,012,988.42x = 1,417,785,929,228,760,576
  5. Step 5: Solve for x
    x = 1,417,785,929,228,760,576/1,321,012,988.42
  6. Step 6: Final answer
    x = 1,073,256,615.69

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Double scale
Find fourth proportional to 1,321,012,989.42, 1,822,890,106.04 and 777,768,186.59
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1.5x scale

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.