Finding the Fourth Proportional to 1,387,671.84, 1,915,083.84 and 775,943.68
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Solution
The fourth proportional to 1,387,671.84, 1,915,083.84 and 775,943.68 is: 1,070,856.35
Step by Step Solution
- Step 1: Write the proportion equation
1,387,671.84 : 1,915,083.84 = 775,943.68 : x - Step 2: Convert to fraction form
1,387,671.84/1,915,083.84 = 775,943.68/x - Step 3: Cross multiply
1,387,671.84x = 1,915,083.84 × 775,943.68 - Step 4: Simplify right side
1,387,671.84x = 1,485,997,202,318.13 - Step 5: Solve for x
x = 1,485,997,202,318.13/1,387,671.84 - Step 6: Final answer
x = 1,070,856.35
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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.