Finding the Fourth Proportional to 719,545.92, 992,957.84 and 392,847.76
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Solution
The fourth proportional to 719,545.92, 992,957.84 and 392,847.76 is: 542,121.43
Step by Step Solution
- Step 1: Write the proportion equation
719,545.92 : 992,957.84 = 392,847.76 : x - Step 2: Convert to fraction form
719,545.92/992,957.84 = 392,847.76/x - Step 3: Cross multiply
719,545.92x = 992,957.84 × 392,847.76 - Step 4: Simplify right side
719,545.92x = 390,081,263,218.44 - Step 5: Solve for x
x = 390,081,263,218.44/719,545.92 - Step 6: Final answer
x = 542,121.43
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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.