Finding the Fourth Proportional to 743,740.20, 1,115,925.98 and 406,386.80
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Solution
The fourth proportional to 743,740.20, 1,115,925.98 and 406,386.80 is: 609,752.69
Step by Step Solution
- Step 1: Write the proportion equation
743,740.20 : 1,115,925.98 = 406,386.80 : x - Step 2: Convert to fraction form
743,740.20/1,115,925.98 = 406,386.80/x - Step 3: Cross multiply
743,740.20x = 1,115,925.98 × 406,386.80 - Step 4: Simplify right side
743,740.20x = 453,497,588,049.06 - Step 5: Solve for x
x = 453,497,588,049.06/743,740.20 - Step 6: Final answer
x = 609,752.69
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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.