Finding the Fourth Proportional to 18,989,415.16, 28,484,123.09 and 4,612,386.06
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Solution
The fourth proportional to 18,989,415.16, 28,484,123.09 and 4,612,386.06 is: 6,918,579.17
Step by Step Solution
- Step 1: Write the proportion equation
18,989,415.16 : 28,484,123.09 = 4,612,386.06 : x - Step 2: Convert to fraction form
18,989,415.16/28,484,123.09 = 4,612,386.06/x - Step 3: Cross multiply
18,989,415.16x = 28,484,123.09 × 4,612,386.06 - Step 4: Simplify right side
18,989,415.16x = 131,379,772,248,578.19 - Step 5: Solve for x
x = 131,379,772,248,578.19/18,989,415.16 - Step 6: Final answer
x = 6,918,579.17
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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.