Finding the Fourth Proportional to 1,315,125.09, 1,816,126.05 and 1,243,477.94
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Solution
The fourth proportional to 1,315,125.09, 1,816,126.05 and 1,243,477.94 is: 1,717,184.70
Step by Step Solution
- Step 1: Write the proportion equation
1,315,125.09 : 1,816,126.05 = 1,243,477.94 : x - Step 2: Convert to fraction form
1,315,125.09/1,816,126.05 = 1,243,477.94/x - Step 3: Cross multiply
1,315,125.09x = 1,816,126.05 × 1,243,477.94 - Step 4: Simplify right side
1,315,125.09x = 2,258,312,679,434.34 - Step 5: Solve for x
x = 2,258,312,679,434.34/1,315,125.09 - Step 6: Final answer
x = 1,717,184.70
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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.