Finding the Fourth Proportional to 505,691.18, 697,874.99 and 290,831.39
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Solution
The fourth proportional to 505,691.18, 697,874.99 and 290,831.39 is: 401,359.48
Step by Step Solution
- Step 1: Write the proportion equation
505,691.18 : 697,874.99 = 290,831.39 : x - Step 2: Convert to fraction form
505,691.18/697,874.99 = 290,831.39/x - Step 3: Cross multiply
505,691.18x = 697,874.99 × 290,831.39 - Step 4: Simplify right side
505,691.18x = 202,963,948,444.40 - Step 5: Solve for x
x = 202,963,948,444.40/505,691.18 - Step 6: Final answer
x = 401,359.48
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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.