Finding the Fourth Proportional to 1,217,944,506.44, 1,680,765,077.94 and 661,027,560.68
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Solution
The fourth proportional to 1,217,944,506.44, 1,680,765,077.94 and 661,027,560.68 is: 912,218,934.17
Step by Step Solution
- Step 1: Write the proportion equation
1,217,944,506.44 : 1,680,765,077.94 = 661,027,560.68 : x - Step 2: Convert to fraction form
1,217,944,506.44/1,680,765,077.94 = 661,027,560.68/x - Step 3: Cross multiply
1,217,944,506.44x = 1,680,765,077.94 × 661,027,560.68 - Step 4: Simplify right side
1,217,944,506.44x = 1,111,032,039,546,808,192 - Step 5: Solve for x
x = 1,111,032,039,546,808,192/1,217,944,506.44 - Step 6: Final answer
x = 912,218,934.17
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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.