Finding the Fourth Proportional to 1,990,295.36, 2,982,948.96 and 1,420,781.12
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Solution
The fourth proportional to 1,990,295.36, 2,982,948.96 and 1,420,781.12 is: 2,129,391.27
Step by Step Solution
- Step 1: Write the proportion equation
1,990,295.36 : 2,982,948.96 = 1,420,781.12 : x - Step 2: Convert to fraction form
1,990,295.36/2,982,948.96 = 1,420,781.12/x - Step 3: Cross multiply
1,990,295.36x = 2,982,948.96 × 1,420,781.12 - Step 4: Simplify right side
1,990,295.36x = 4,238,117,564,291.64 - Step 5: Solve for x
x = 4,238,117,564,291.64/1,990,295.36 - Step 6: Final answer
x = 2,129,391.27
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.