Finding the Fourth Proportional to 1,289,643.44, 1,779,670.50 and 738,340.70
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Solution
The fourth proportional to 1,289,643.44, 1,779,670.50 and 738,340.70 is: 1,018,888.73
Step by Step Solution
- Step 1: Write the proportion equation
1,289,643.44 : 1,779,670.50 = 738,340.70 : x - Step 2: Convert to fraction form
1,289,643.44/1,779,670.50 = 738,340.70/x - Step 3: Cross multiply
1,289,643.44x = 1,779,670.50 × 738,340.70 - Step 4: Simplify right side
1,289,643.44x = 1,314,003,162,739.35 - Step 5: Solve for x
x = 1,314,003,162,739.35/1,289,643.44 - Step 6: Final answer
x = 1,018,888.73
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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.