Finding the Fourth Proportional to 816,122.70, 1,223,746.65 and 342,272.70
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Solution
The fourth proportional to 816,122.70, 1,223,746.65 and 342,272.70 is: 513,225.61
Step by Step Solution
- Step 1: Write the proportion equation
816,122.70 : 1,223,746.65 = 342,272.70 : x - Step 2: Convert to fraction form
816,122.70/1,223,746.65 = 342,272.70/x - Step 3: Cross multiply
816,122.70x = 1,223,746.65 × 342,272.70 - Step 4: Simplify right side
816,122.70x = 418,855,070,011.46 - Step 5: Solve for x
x = 418,855,070,011.46/816,122.70 - Step 6: Final answer
x = 513,225.61
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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.