Finding the Fourth Proportional to 771,511.25, 1,064,439.49 and 499,787.44
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Solution
The fourth proportional to 771,511.25, 1,064,439.49 and 499,787.44 is: 689,547.28
Step by Step Solution
- Step 1: Write the proportion equation
771,511.25 : 1,064,439.49 = 499,787.44 : x - Step 2: Convert to fraction form
771,511.25/1,064,439.49 = 499,787.44/x - Step 3: Cross multiply
771,511.25x = 1,064,439.49 × 499,787.44 - Step 4: Simplify right side
771,511.25x = 531,993,487,742.01 - Step 5: Solve for x
x = 531,993,487,742.01/771,511.25 - Step 6: Final answer
x = 689,547.28
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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.