Finding the Fourth Proportional to 1,988,001.62, 2,742,652.86 and 1,149,638.36
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Solution
The fourth proportional to 1,988,001.62, 2,742,652.86 and 1,149,638.36 is: 1,586,044.45
Step by Step Solution
- Step 1: Write the proportion equation
1,988,001.62 : 2,742,652.86 = 1,149,638.36 : x - Step 2: Convert to fraction form
1,988,001.62/2,742,652.86 = 1,149,638.36/x - Step 3: Cross multiply
1,988,001.62x = 2,742,652.86 × 1,149,638.36 - Step 4: Simplify right side
1,988,001.62x = 3,153,058,922,306.45 - Step 5: Solve for x
x = 3,153,058,922,306.45/1,988,001.62 - Step 6: Final answer
x = 1,586,044.45
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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.