Finding the Fourth Proportional to 626,543.70, 939,815.55 and 311,615.70
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Solution
The fourth proportional to 626,543.70, 939,815.55 and 311,615.70 is: 467,423.55
Step by Step Solution
- Step 1: Write the proportion equation
626,543.70 : 939,815.55 = 311,615.70 : x - Step 2: Convert to fraction form
626,543.70/939,815.55 = 311,615.70/x - Step 3: Cross multiply
626,543.70x = 939,815.55 × 311,615.70 - Step 4: Simplify right side
626,543.70x = 292,861,280,484.14 - Step 5: Solve for x
x = 292,861,280,484.14/626,543.70 - Step 6: Final answer
x = 467,423.55
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1.5x scale
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.