Finding the Fourth Proportional to 1,200,446,011.68, 1,656,579,916.80 and 664,621,558.08
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Solution
The fourth proportional to 1,200,446,011.68, 1,656,579,916.80 and 664,621,558.08 is: 917,158,051.82
Step by Step Solution
- Step 1: Write the proportion equation
1,200,446,011.68 : 1,656,579,916.80 = 664,621,558.08 : x - Step 2: Convert to fraction form
1,200,446,011.68/1,656,579,916.80 = 664,621,558.08/x - Step 3: Cross multiply
1,200,446,011.68x = 1,656,579,916.80 × 664,621,558.08 - Step 4: Simplify right side
1,200,446,011.68x = 1,100,998,725,387,652,864 - Step 5: Solve for x
x = 1,100,998,725,387,652,864/1,200,446,011.68 - Step 6: Final answer
x = 917,158,051.82
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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.