Finding the Fourth Proportional to 1,368,071.98, 1,888,126.81 and 787,283.15
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Solution
The fourth proportional to 1,368,071.98, 1,888,126.81 and 787,283.15 is: 1,086,558.63
Step by Step Solution
- Step 1: Write the proportion equation
1,368,071.98 : 1,888,126.81 = 787,283.15 : x - Step 2: Convert to fraction form
1,368,071.98/1,888,126.81 = 787,283.15/x - Step 3: Cross multiply
1,368,071.98x = 1,888,126.81 × 787,283.15 - Step 4: Simplify right side
1,368,071.98x = 1,486,490,411,167.41 - Step 5: Solve for x
x = 1,486,490,411,167.41/1,368,071.98 - Step 6: Final answer
x = 1,086,558.63
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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.