Finding the Fourth Proportional to 840,711.68, 1,261,054.14 and 391,181.12
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Solution
The fourth proportional to 840,711.68, 1,261,054.14 and 391,181.12 is: 586,765.45
Step by Step Solution
- Step 1: Write the proportion equation
840,711.68 : 1,261,054.14 = 391,181.12 : x - Step 2: Convert to fraction form
840,711.68/1,261,054.14 = 391,181.12/x - Step 3: Cross multiply
840,711.68x = 1,261,054.14 × 391,181.12 - Step 4: Simplify right side
840,711.68x = 493,300,570,865.84 - Step 5: Solve for x
x = 493,300,570,865.84/840,711.68 - Step 6: Final answer
x = 586,765.45
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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.