Finding the Fourth Proportional to 1,615,115.61, 2,228,841.42 and 917,391.53
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Solution
The fourth proportional to 1,615,115.61, 2,228,841.42 and 917,391.53 is: 1,265,990.02
Step by Step Solution
- Step 1: Write the proportion equation
1,615,115.61 : 2,228,841.42 = 917,391.53 : x - Step 2: Convert to fraction form
1,615,115.61/2,228,841.42 = 917,391.53/x - Step 3: Cross multiply
1,615,115.61x = 2,228,841.42 × 917,391.53 - Step 4: Simplify right side
1,615,115.61x = 2,044,720,240,421.17 - Step 5: Solve for x
x = 2,044,720,240,421.17/1,615,115.61 - Step 6: Final answer
x = 1,265,990.02
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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.