Finding the Fourth Proportional to 2,157,856.62, 2,977,630.11 and 1,190,924.46
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Solution
The fourth proportional to 2,157,856.62, 2,977,630.11 and 1,190,924.46 is: 1,643,358.74
Step by Step Solution
- Step 1: Write the proportion equation
2,157,856.62 : 2,977,630.11 = 1,190,924.46 : x - Step 2: Convert to fraction form
2,157,856.62/2,977,630.11 = 1,190,924.46/x - Step 3: Cross multiply
2,157,856.62x = 2,977,630.11 × 1,190,924.46 - Step 4: Simplify right side
2,157,856.62x = 3,546,132,530,831.49 - Step 5: Solve for x
x = 3,546,132,530,831.49/2,157,856.62 - Step 6: Final answer
x = 1,643,358.74
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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.