Finding the Fourth Proportional to 2,128,833.42, 2,937,765.99 and 1,211,041.02
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Solution
The fourth proportional to 2,128,833.42, 2,937,765.99 and 1,211,041.02 is: 1,671,222.88
Step by Step Solution
- Step 1: Write the proportion equation
2,128,833.42 : 2,937,765.99 = 1,211,041.02 : x - Step 2: Convert to fraction form
2,128,833.42/2,937,765.99 = 1,211,041.02/x - Step 3: Cross multiply
2,128,833.42x = 2,937,765.99 × 1,211,041.02 - Step 4: Simplify right side
2,128,833.42x = 3,557,755,121,050.91 - Step 5: Solve for x
x = 3,557,755,121,050.91/2,128,833.42 - Step 6: Final answer
x = 1,671,222.88
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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.