Finding the Fourth Proportional to 1,221,397.15, 1,831,209.99 and 821,044.93
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Solution
The fourth proportional to 1,221,397.15, 1,831,209.99 and 821,044.93 is: 1,230,971.99
Step by Step Solution
- Step 1: Write the proportion equation
1,221,397.15 : 1,831,209.99 = 821,044.93 : x - Step 2: Convert to fraction form
1,221,397.15/1,831,209.99 = 821,044.93/x - Step 3: Cross multiply
1,221,397.15x = 1,831,209.99 × 821,044.93 - Step 4: Simplify right side
1,221,397.15x = 1,503,505,678,054.85 - Step 5: Solve for x
x = 1,503,505,678,054.85/1,221,397.15 - Step 6: Final answer
x = 1,230,971.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.