Finding the Fourth Proportional to 905,710.05, 1,249,779.45 and 543,149.19
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Solution
The fourth proportional to 905,710.05, 1,249,779.45 and 543,149.19 is: 749,485.66
Step by Step Solution
- Step 1: Write the proportion equation
905,710.05 : 1,249,779.45 = 543,149.19 : x - Step 2: Convert to fraction form
905,710.05/1,249,779.45 = 543,149.19/x - Step 3: Cross multiply
905,710.05x = 1,249,779.45 × 543,149.19 - Step 4: Simplify right side
905,710.05x = 678,816,695,946.15 - Step 5: Solve for x
x = 678,816,695,946.15/905,710.05 - Step 6: Final answer
x = 749,485.66
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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.