Finding the Fourth Proportional to 722,129.76, 996,595.12 and 399,869.84
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Solution
The fourth proportional to 722,129.76, 996,595.12 and 399,869.84 is: 551,851.42
Step by Step Solution
- Step 1: Write the proportion equation
722,129.76 : 996,595.12 = 399,869.84 : x - Step 2: Convert to fraction form
722,129.76/996,595.12 = 399,869.84/x - Step 3: Cross multiply
722,129.76x = 996,595.12 × 399,869.84 - Step 4: Simplify right side
722,129.76x = 398,508,331,179.18 - Step 5: Solve for x
x = 398,508,331,179.18/722,129.76 - Step 6: Final answer
x = 551,851.42
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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.