Home / 1,382,788,713.42-1,908,133,067.25-779,926,114.80

Finding the Fourth Proportional to 1,382,788,713.42, 1,908,133,067.25 and 779,926,114.80

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Solution

The fourth proportional to 1,382,788,713.42, 1,908,133,067.25 and 779,926,114.80 is: 1,076,232,974.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,788,713.42 : 1,908,133,067.25 = 779,926,114.80 : x
  2. Step 2: Convert to fraction form
    1,382,788,713.42/1,908,133,067.25 = 779,926,114.80/x
  3. Step 3: Cross multiply
    1,382,788,713.42x = 1,908,133,067.25 × 779,926,114.80
  4. Step 4: Simplify right side
    1,382,788,713.42x = 1,488,202,809,661,699,584
  5. Step 5: Solve for x
    x = 1,488,202,809,661,699,584/1,382,788,713.42
  6. Step 6: Final answer
    x = 1,076,232,974.15

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Double scale
Find fourth proportional to 1,382,788,714.42, 1,908,133,068.63 and 779,926,115.80
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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.