Finding the Fourth Proportional to 1,395,590,507.40, 1,925,927,637.30 and 769,081,414.44
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Solution
The fourth proportional to 1,395,590,507.40, 1,925,927,637.30 and 769,081,414.44 is: 1,061,339,371.08
Step by Step Solution
- Step 1: Write the proportion equation
1,395,590,507.40 : 1,925,927,637.30 = 769,081,414.44 : x - Step 2: Convert to fraction form
1,395,590,507.40/1,925,927,637.30 = 769,081,414.44/x - Step 3: Cross multiply
1,395,590,507.40x = 1,925,927,637.30 × 769,081,414.44 - Step 4: Simplify right side
1,395,590,507.40x = 1,481,195,151,403,771,392 - Step 5: Solve for x
x = 1,481,195,151,403,771,392/1,395,590,507.40 - Step 6: Final answer
x = 1,061,339,371.08
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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.