Finding the Fourth Proportional to 1,358,971.94, 1,875,228.90 and 815,129.84
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Solution
The fourth proportional to 1,358,971.94, 1,875,228.90 and 815,129.84 is: 1,124,787.78
Step by Step Solution
- Step 1: Write the proportion equation
1,358,971.94 : 1,875,228.90 = 815,129.84 : x - Step 2: Convert to fraction form
1,358,971.94/1,875,228.90 = 815,129.84/x - Step 3: Cross multiply
1,358,971.94x = 1,875,228.90 × 815,129.84 - Step 4: Simplify right side
1,358,971.94x = 1,528,555,033,220.38 - Step 5: Solve for x
x = 1,528,555,033,220.38/1,358,971.94 - Step 6: Final answer
x = 1,124,787.78
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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.