Finding the Fourth Proportional to 1,488,206,181.22, 2,053,708,232.12 and 819,136,921.30
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Solution
The fourth proportional to 1,488,206,181.22, 2,053,708,232.12 and 819,136,921.30 is: 1,130,399,980.68
Step by Step Solution
- Step 1: Write the proportion equation
1,488,206,181.22 : 2,053,708,232.12 = 819,136,921.30 : x - Step 2: Convert to fraction form
1,488,206,181.22/2,053,708,232.12 = 819,136,921.30/x - Step 3: Cross multiply
1,488,206,181.22x = 2,053,708,232.12 × 819,136,921.30 - Step 4: Simplify right side
1,488,206,181.22x = 1,682,268,238,501,125,376 - Step 5: Solve for x
x = 1,682,268,238,501,125,376/1,488,206,181.22 - Step 6: Final answer
x = 1,130,399,980.68
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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.