Finding the Fourth Proportional to 992,995.20, 1,488,326.40 and 459,389.07
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Solution
The fourth proportional to 992,995.20, 1,488,326.40 and 459,389.07 is: 688,543.99
Step by Step Solution
- Step 1: Write the proportion equation
992,995.20 : 1,488,326.40 = 459,389.07 : x - Step 2: Convert to fraction form
992,995.20/1,488,326.40 = 459,389.07/x - Step 3: Cross multiply
992,995.20x = 1,488,326.40 × 459,389.07 - Step 4: Simplify right side
992,995.20x = 683,720,880,752.45 - Step 5: Solve for x
x = 683,720,880,752.45/992,995.20 - Step 6: Final answer
x = 688,543.99
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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.