Finding the Fourth Proportional to 714,430.95, 985,924.94 and 392,135.19
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Solution
The fourth proportional to 714,430.95, 985,924.94 and 392,135.19 is: 541,152.17
Step by Step Solution
- Step 1: Write the proportion equation
714,430.95 : 985,924.94 = 392,135.19 : x - Step 2: Convert to fraction form
714,430.95/985,924.94 = 392,135.19/x - Step 3: Cross multiply
714,430.95x = 985,924.94 × 392,135.19 - Step 4: Simplify right side
714,430.95x = 386,615,861,711.96 - Step 5: Solve for x
x = 386,615,861,711.96/714,430.95 - Step 6: Final answer
x = 541,152.17
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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.