Finding the Fourth Proportional to 1,420,602.87, 2,130,889.71 and 821,182.62
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Solution
The fourth proportional to 1,420,602.87, 2,130,889.71 and 821,182.62 is: 1,231,765.49
Step by Step Solution
- Step 1: Write the proportion equation
1,420,602.87 : 2,130,889.71 = 821,182.62 : x - Step 2: Convert to fraction form
1,420,602.87/2,130,889.71 = 821,182.62/x - Step 3: Cross multiply
1,420,602.87x = 2,130,889.71 × 821,182.62 - Step 4: Simplify right side
1,420,602.87x = 1,749,849,594,988.84 - Step 5: Solve for x
x = 1,749,849,594,988.84/1,420,602.87 - Step 6: Final answer
x = 1,231,765.49
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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.