Finding the Fourth Proportional to 553,555.91, 763,903.65 and 311,916.31
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Solution
The fourth proportional to 553,555.91, 763,903.65 and 311,916.31 is: 430,442.52
Step by Step Solution
- Step 1: Write the proportion equation
553,555.91 : 763,903.65 = 311,916.31 : x - Step 2: Convert to fraction form
553,555.91/763,903.65 = 311,916.31/x - Step 3: Cross multiply
553,555.91x = 763,903.65 × 311,916.31 - Step 4: Simplify right side
553,555.91x = 238,274,004,624.09 - Step 5: Solve for x
x = 238,274,004,624.09/553,555.91 - Step 6: Final answer
x = 430,442.52
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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.