Finding the Fourth Proportional to 7,406,391.36, 10,220,409.18 and 4,142,575.74
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Solution
The fourth proportional to 7,406,391.36, 10,220,409.18 and 4,142,575.74 is: 5,716,524.70
Step by Step Solution
- Step 1: Write the proportion equation
7,406,391.36 : 10,220,409.18 = 4,142,575.74 : x - Step 2: Convert to fraction form
7,406,391.36/10,220,409.18 = 4,142,575.74/x - Step 3: Cross multiply
7,406,391.36x = 10,220,409.18 × 4,142,575.74 - Step 4: Simplify right side
7,406,391.36x = 42,338,819,121,941.30 - Step 5: Solve for x
x = 42,338,819,121,941.30/7,406,391.36 - Step 6: Final answer
x = 5,716,524.70
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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.