Finding the Fourth Proportional to 1,005,136.40, 1,387,072.14 and 552,417.68
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Solution
The fourth proportional to 1,005,136.40, 1,387,072.14 and 552,417.68 is: 762,327.55
Step by Step Solution
- Step 1: Write the proportion equation
1,005,136.40 : 1,387,072.14 = 552,417.68 : x - Step 2: Convert to fraction form
1,005,136.40/1,387,072.14 = 552,417.68/x - Step 3: Cross multiply
1,005,136.40x = 1,387,072.14 × 552,417.68 - Step 4: Simplify right side
1,005,136.40x = 766,243,173,571.44 - Step 5: Solve for x
x = 766,243,173,571.44/1,005,136.40 - Step 6: Final answer
x = 762,327.55
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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.