Finding the Fourth Proportional to 1,911,485.98, 2,865,621.93 and 1,278,467.74
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Solution
The fourth proportional to 1,911,485.98, 2,865,621.93 and 1,278,467.74 is: 1,916,626.77
Step by Step Solution
- Step 1: Write the proportion equation
1,911,485.98 : 2,865,621.93 = 1,278,467.74 : x - Step 2: Convert to fraction form
1,911,485.98/2,865,621.93 = 1,278,467.74/x - Step 3: Cross multiply
1,911,485.98x = 2,865,621.93 × 1,278,467.74 - Step 4: Simplify right side
1,911,485.98x = 3,663,605,192,541.54 - Step 5: Solve for x
x = 3,663,605,192,541.54/1,911,485.98 - Step 6: Final answer
x = 1,916,626.77
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.