Finding the Fourth Proportional to 698,468.95, 963,874.11 and 388,390.42
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Solution
The fourth proportional to 698,468.95, 963,874.11 and 388,390.42 is: 535,971.53
Step by Step Solution
- Step 1: Write the proportion equation
698,468.95 : 963,874.11 = 388,390.42 : x - Step 2: Convert to fraction form
698,468.95/963,874.11 = 388,390.42/x - Step 3: Cross multiply
698,468.95x = 963,874.11 × 388,390.42 - Step 4: Simplify right side
698,468.95x = 374,359,470,410.03 - Step 5: Solve for x
x = 374,359,470,410.03/698,468.95 - Step 6: Final answer
x = 535,971.53
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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.