Finding the Fourth Proportional to 3,178,603.97, 4,386,522.69 and 1,728,303.12
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Solution
The fourth proportional to 3,178,603.97, 4,386,522.69 and 1,728,303.12 is: 2,385,085.07
Step by Step Solution
- Step 1: Write the proportion equation
3,178,603.97 : 4,386,522.69 = 1,728,303.12 : x - Step 2: Convert to fraction form
3,178,603.97/4,386,522.69 = 1,728,303.12/x - Step 3: Cross multiply
3,178,603.97x = 4,386,522.69 × 1,728,303.12 - Step 4: Simplify right side
3,178,603.97x = 7,581,240,851,077.79 - Step 5: Solve for x
x = 7,581,240,851,077.79/3,178,603.97 - Step 6: Final answer
x = 2,385,085.07
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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.