Finding the Fourth Proportional to 714,509.07, 986,020.05 and 387,822.09
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Solution
The fourth proportional to 714,509.07, 986,020.05 and 387,822.09 is: 535,193.15
Step by Step Solution
- Step 1: Write the proportion equation
714,509.07 : 986,020.05 = 387,822.09 : x - Step 2: Convert to fraction form
714,509.07/986,020.05 = 387,822.09/x - Step 3: Cross multiply
714,509.07x = 986,020.05 × 387,822.09 - Step 4: Simplify right side
714,509.07x = 382,400,356,572.91 - Step 5: Solve for x
x = 382,400,356,572.91/714,509.07 - Step 6: Final answer
x = 535,193.15
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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.