Finding the Fourth Proportional to 7,791,411.80, 11,687,117.70 and 4,921,630.40
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Solution
The fourth proportional to 7,791,411.80, 11,687,117.70 and 4,921,630.40 is: 7,382,445.60
Step by Step Solution
- Step 1: Write the proportion equation
7,791,411.80 : 11,687,117.70 = 4,921,630.40 : x - Step 2: Convert to fraction form
7,791,411.80/11,687,117.70 = 4,921,630.40/x - Step 3: Cross multiply
7,791,411.80x = 11,687,117.70 × 4,921,630.40 - Step 4: Simplify right side
7,791,411.80x = 57,519,673,760,698.08 - Step 5: Solve for x
x = 57,519,673,760,698.08/7,791,411.80 - Step 6: Final answer
x = 7,382,445.60
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1.5x scale
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.