Finding the Fourth Proportional to 719,069.36, 992,314.54 and 396,779.21
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Solution
The fourth proportional to 719,069.36, 992,314.54 and 396,779.21 is: 547,554.65
Step by Step Solution
- Step 1: Write the proportion equation
719,069.36 : 992,314.54 = 396,779.21 : x - Step 2: Convert to fraction form
719,069.36/992,314.54 = 396,779.21/x - Step 3: Cross multiply
719,069.36x = 992,314.54 × 396,779.21 - Step 4: Simplify right side
719,069.36x = 393,729,773,299.19 - Step 5: Solve for x
x = 393,729,773,299.19/719,069.36 - Step 6: Final answer
x = 547,554.65
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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.