Finding the Fourth Proportional to 1,681,685.67, 2,320,725.62 and 917,739.24
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Solution
The fourth proportional to 1,681,685.67, 2,320,725.62 and 917,739.24 is: 1,266,479.82
Step by Step Solution
- Step 1: Write the proportion equation
1,681,685.67 : 2,320,725.62 = 917,739.24 : x - Step 2: Convert to fraction form
1,681,685.67/2,320,725.62 = 917,739.24/x - Step 3: Cross multiply
1,681,685.67x = 2,320,725.62 × 917,739.24 - Step 4: Simplify right side
1,681,685.67x = 2,129,820,962,158.63 - Step 5: Solve for x
x = 2,129,820,962,158.63/1,681,685.67 - Step 6: Final answer
x = 1,266,479.82
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1.5x scale
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.