Finding the Fourth Proportional to 840,656.13, 1,260,995.19 and 279,690.63
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Solution
The fourth proportional to 840,656.13, 1,260,995.19 and 279,690.63 is: 419,539.60
Step by Step Solution
- Step 1: Write the proportion equation
840,656.13 : 1,260,995.19 = 279,690.63 : x - Step 2: Convert to fraction form
840,656.13/1,260,995.19 = 279,690.63/x - Step 3: Cross multiply
840,656.13x = 1,260,995.19 × 279,690.63 - Step 4: Simplify right side
840,656.13x = 352,688,539,118.07 - Step 5: Solve for x
x = 352,688,539,118.07/840,656.13 - Step 6: Final answer
x = 419,539.60
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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.