Finding the Fourth Proportional to 528,963.49, 729,974.91 and 287,248.15
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Solution
The fourth proportional to 528,963.49, 729,974.91 and 287,248.15 is: 396,405.32
Step by Step Solution
- Step 1: Write the proportion equation
528,963.49 : 729,974.91 = 287,248.15 : x - Step 2: Convert to fraction form
528,963.49/729,974.91 = 287,248.15/x - Step 3: Cross multiply
528,963.49x = 729,974.91 × 287,248.15 - Step 4: Simplify right side
528,963.49x = 209,683,942,443.92 - Step 5: Solve for x
x = 209,683,942,443.92/528,963.49 - Step 6: Final answer
x = 396,405.32
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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.