Finding the Fourth Proportional to 7,190,970.18, 9,923,479.88 and 3,927,786.99
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Solution
The fourth proportional to 7,190,970.18, 9,923,479.88 and 3,927,786.99 is: 5,420,313.83
Step by Step Solution
- Step 1: Write the proportion equation
7,190,970.18 : 9,923,479.88 = 3,927,786.99 : x - Step 2: Convert to fraction form
7,190,970.18/9,923,479.88 = 3,927,786.99/x - Step 3: Cross multiply
7,190,970.18x = 9,923,479.88 × 3,927,786.99 - Step 4: Simplify right side
7,190,970.18x = 38,977,315,148,551.83 - Step 5: Solve for x
x = 38,977,315,148,551.83/7,190,970.18 - Step 6: Final answer
x = 5,420,313.83
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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.