Finding the Fourth Proportional to 1,011,391.98, 1,517,309.50 and 380,305.79
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Solution
The fourth proportional to 1,011,391.98, 1,517,309.50 and 380,305.79 is: 570,541.99
Step by Step Solution
- Step 1: Write the proportion equation
1,011,391.98 : 1,517,309.50 = 380,305.79 : x - Step 2: Convert to fraction form
1,011,391.98/1,517,309.50 = 380,305.79/x - Step 3: Cross multiply
1,011,391.98x = 1,517,309.50 × 380,305.79 - Step 4: Simplify right side
1,011,391.98x = 577,041,588,072.01 - Step 5: Solve for x
x = 577,041,588,072.01/1,011,391.98 - Step 6: Final answer
x = 570,541.99
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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.