Finding the Fourth Proportional to 2,781,312,206.40, 4,172,528,181.60 and 816,161,486.40
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Solution
The fourth proportional to 2,781,312,206.40, 4,172,528,181.60 and 816,161,486.40 is: 1,224,406,521.10
Step by Step Solution
- Step 1: Write the proportion equation
2,781,312,206.40 : 4,172,528,181.60 = 816,161,486.40 : x - Step 2: Convert to fraction form
2,781,312,206.40/4,172,528,181.60 = 816,161,486.40/x - Step 3: Cross multiply
2,781,312,206.40x = 4,172,528,181.60 × 816,161,486.40 - Step 4: Simplify right side
2,781,312,206.40x = 3,405,456,802,740,545,024 - Step 5: Solve for x
x = 3,405,456,802,740,545,024/2,781,312,206.40 - Step 6: Final answer
x = 1,224,406,521.10
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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.