Finding the Fourth Proportional to 2,129,127.84, 2,938,176.24 and 1,313,005.28
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Solution
The fourth proportional to 2,129,127.84, 2,938,176.24 and 1,313,005.28 is: 1,811,934.84
Step by Step Solution
- Step 1: Write the proportion equation
2,129,127.84 : 2,938,176.24 = 1,313,005.28 : x - Step 2: Convert to fraction form
2,129,127.84/2,938,176.24 = 1,313,005.28/x - Step 3: Cross multiply
2,129,127.84x = 2,938,176.24 × 1,313,005.28 - Step 4: Simplify right side
2,129,127.84x = 3,857,840,916,690.55 - Step 5: Solve for x
x = 3,857,840,916,690.55/2,129,127.84 - Step 6: Final answer
x = 1,811,934.84
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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.