Finding the Fourth Proportional to 2,155,478.35, 2,974,631.91 and 1,175,470.99
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Solution
The fourth proportional to 2,155,478.35, 2,974,631.91 and 1,175,470.99 is: 1,622,189.11
Step by Step Solution
- Step 1: Write the proportion equation
2,155,478.35 : 2,974,631.91 = 1,175,470.99 : x - Step 2: Convert to fraction form
2,155,478.35/2,974,631.91 = 1,175,470.99/x - Step 3: Cross multiply
2,155,478.35x = 2,974,631.91 × 1,175,470.99 - Step 4: Simplify right side
2,155,478.35x = 3,496,593,516,133.29 - Step 5: Solve for x
x = 3,496,593,516,133.29/2,155,478.35 - Step 6: Final answer
x = 1,622,189.11
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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.