Finding the Fourth Proportional to 621,664,374.30, 932,244,619.05 and 212,509,916.70
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Solution
The fourth proportional to 621,664,374.30, 932,244,619.05 and 212,509,916.70 is: 318,678,750.99
Step by Step Solution
- Step 1: Write the proportion equation
621,664,374.30 : 932,244,619.05 = 212,509,916.70 : x - Step 2: Convert to fraction form
621,664,374.30/932,244,619.05 = 212,509,916.70/x - Step 3: Cross multiply
621,664,374.30x = 932,244,619.05 × 212,509,916.70 - Step 4: Simplify right side
621,664,374.30x = 198,111,226,338,338,720 - Step 5: Solve for x
x = 198,111,226,338,338,720/621,664,374.30 - Step 6: Final answer
x = 318,678,750.99
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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.