Finding the Fourth Proportional to 690,439.68, 952,787.47 and 384,515.98
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Solution
The fourth proportional to 690,439.68, 952,787.47 and 384,515.98 is: 530,621.31
Step by Step Solution
- Step 1: Write the proportion equation
690,439.68 : 952,787.47 = 384,515.98 : x - Step 2: Convert to fraction form
690,439.68/952,787.47 = 384,515.98/x - Step 3: Cross multiply
690,439.68x = 952,787.47 × 384,515.98 - Step 4: Simplify right side
690,439.68x = 366,362,007,758.77 - Step 5: Solve for x
x = 366,362,007,758.77/690,439.68 - Step 6: Final answer
x = 530,621.31
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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.