Finding the Fourth Proportional to 3,178,768.66, 4,386,670.48 and 1,728,465.08
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Solution
The fourth proportional to 3,178,768.66, 4,386,670.48 and 1,728,465.08 is: 2,385,265.34
Step by Step Solution
- Step 1: Write the proportion equation
3,178,768.66 : 4,386,670.48 = 1,728,465.08 : x - Step 2: Convert to fraction form
3,178,768.66/4,386,670.48 = 1,728,465.08/x - Step 3: Cross multiply
3,178,768.66x = 4,386,670.48 × 1,728,465.08 - Step 4: Simplify right side
3,178,768.66x = 7,582,206,712,651.45 - Step 5: Solve for x
x = 7,582,206,712,651.45/3,178,768.66 - Step 6: Final answer
x = 2,385,265.34
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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.