Finding the Fourth Proportional to 465,721.70, 698,582.55 and 386,989.70
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Solution
The fourth proportional to 465,721.70, 698,582.55 and 386,989.70 is: 580,484.55
Step by Step Solution
- Step 1: Write the proportion equation
465,721.70 : 698,582.55 = 386,989.70 : x - Step 2: Convert to fraction form
465,721.70/698,582.55 = 386,989.70/x - Step 3: Cross multiply
465,721.70x = 698,582.55 × 386,989.70 - Step 4: Simplify right side
465,721.70x = 270,344,251,449.74 - Step 5: Solve for x
x = 270,344,251,449.74/465,721.70 - Step 6: Final answer
x = 580,484.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.