Finding the Fourth Proportional to 7,190,969.93, 9,923,479.53 and 3,927,786.74
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Solution
The fourth proportional to 7,190,969.93, 9,923,479.53 and 3,927,786.74 is: 5,420,313.49
Step by Step Solution
- Step 1: Write the proportion equation
7,190,969.93 : 9,923,479.53 = 3,927,786.74 : x - Step 2: Convert to fraction form
7,190,969.93/9,923,479.53 = 3,927,786.74/x - Step 3: Cross multiply
7,190,969.93x = 9,923,479.53 × 3,927,786.74 - Step 4: Simplify right side
7,190,969.93x = 38,977,311,312,595.43 - Step 5: Solve for x
x = 38,977,311,312,595.43/7,190,969.93 - Step 6: Final answer
x = 5,420,313.49
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1.5x scale
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.