Finding the Fourth Proportional to 692,139.80, 1,038,209.70 and 186,699.80
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Solution
The fourth proportional to 692,139.80, 1,038,209.70 and 186,699.80 is: 280,049.70
Step by Step Solution
- Step 1: Write the proportion equation
692,139.80 : 1,038,209.70 = 186,699.80 : x - Step 2: Convert to fraction form
692,139.80/1,038,209.70 = 186,699.80/x - Step 3: Cross multiply
692,139.80x = 1,038,209.70 × 186,699.80 - Step 4: Simplify right side
692,139.80x = 193,833,543,348.06 - Step 5: Solve for x
x = 193,833,543,348.06/692,139.80 - Step 6: Final answer
x = 280,049.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.