Finding the Fourth Proportional to 7,538,830.74, 10,409,869.50 and 6,991,779.42
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Solution
The fourth proportional to 7,538,830.74, 10,409,869.50 and 6,991,779.42 is: 9,654,482.75
Step by Step Solution
- Step 1: Write the proportion equation
7,538,830.74 : 10,409,869.50 = 6,991,779.42 : x - Step 2: Convert to fraction form
7,538,830.74/10,409,869.50 = 6,991,779.42/x - Step 3: Cross multiply
7,538,830.74x = 10,409,869.50 × 6,991,779.42 - Step 4: Simplify right side
7,538,830.74x = 72,783,511,334,985.69 - Step 5: Solve for x
x = 72,783,511,334,985.69/7,538,830.74 - Step 6: Final answer
x = 9,654,482.75
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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.