Finding the Fourth Proportional to 7,783,019.80, 11,643,036.90 and 6,838,235.80
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Solution
The fourth proportional to 7,783,019.80, 11,643,036.90 and 6,838,235.80 is: 10,229,683.82
Step by Step Solution
- Step 1: Write the proportion equation
7,783,019.80 : 11,643,036.90 = 6,838,235.80 : x - Step 2: Convert to fraction form
7,783,019.80/11,643,036.90 = 6,838,235.80/x - Step 3: Cross multiply
7,783,019.80x = 11,643,036.90 × 6,838,235.80 - Step 4: Simplify right side
7,783,019.80x = 79,617,831,750,301.02 - Step 5: Solve for x
x = 79,617,831,750,301.02/7,783,019.80 - Step 6: Final answer
x = 10,229,683.82
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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.