Finding the Fourth Proportional to 1,397,813.76, 1,928,518.98 and 1,139,246.10
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Solution
The fourth proportional to 1,397,813.76, 1,928,518.98 and 1,139,246.10 is: 1,571,781.44
Step by Step Solution
- Step 1: Write the proportion equation
1,397,813.76 : 1,928,518.98 = 1,139,246.10 : x - Step 2: Convert to fraction form
1,397,813.76/1,928,518.98 = 1,139,246.10/x - Step 3: Cross multiply
1,397,813.76x = 1,928,518.98 × 1,139,246.10 - Step 4: Simplify right side
1,397,813.76x = 2,197,057,726,740.98 - Step 5: Solve for x
x = 2,197,057,726,740.98/1,397,813.76 - Step 6: Final answer
x = 1,571,781.44
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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.