Finding the Fourth Proportional to 5,357,197.76, 7,392,987.21 and 2,909,856.68
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Solution
The fourth proportional to 5,357,197.76, 7,392,987.21 and 2,909,856.68 is: 4,015,631.71
Step by Step Solution
- Step 1: Write the proportion equation
5,357,197.76 : 7,392,987.21 = 2,909,856.68 : x - Step 2: Convert to fraction form
5,357,197.76/7,392,987.21 = 2,909,856.68/x - Step 3: Cross multiply
5,357,197.76x = 7,392,987.21 × 2,909,856.68 - Step 4: Simplify right side
5,357,197.76x = 21,512,533,218,173.06 - Step 5: Solve for x
x = 21,512,533,218,173.06/5,357,197.76 - Step 6: Final answer
x = 4,015,631.71
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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.