Finding the Fourth Proportional to 728,929.63, 1,006,122.94 and 423,104.54
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Solution
The fourth proportional to 728,929.63, 1,006,122.94 and 423,104.54 is: 584,000.39
Step by Step Solution
- Step 1: Write the proportion equation
728,929.63 : 1,006,122.94 = 423,104.54 : x - Step 2: Convert to fraction form
728,929.63/1,006,122.94 = 423,104.54/x - Step 3: Cross multiply
728,929.63x = 1,006,122.94 × 423,104.54 - Step 4: Simplify right side
728,929.63x = 425,695,185,169.69 - Step 5: Solve for x
x = 425,695,185,169.69/728,929.63 - Step 6: Final answer
x = 584,000.39
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1.5x scale
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.