Finding the Fourth Proportional to 1,395,590,636.64, 1,925,927,815.20 and 769,081,543.68
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Solution
The fourth proportional to 1,395,590,636.64, 1,925,927,815.20 and 769,081,543.68 is: 1,061,339,549.18
Step by Step Solution
- Step 1: Write the proportion equation
1,395,590,636.64 : 1,925,927,815.20 = 769,081,543.68 : x - Step 2: Convert to fraction form
1,395,590,636.64/1,925,927,815.20 = 769,081,543.68/x - Step 3: Cross multiply
1,395,590,636.64x = 1,925,927,815.20 × 769,081,543.68 - Step 4: Simplify right side
1,395,590,636.64x = 1,481,195,537,130,265,600 - Step 5: Solve for x
x = 1,481,195,537,130,265,600/1,395,590,636.64 - Step 6: Final answer
x = 1,061,339,549.18
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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.