Finding the Fourth Proportional to 791,377.80, 1,092,121.70 and 485,623.12
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Solution
The fourth proportional to 791,377.80, 1,092,121.70 and 485,623.12 is: 670,172.38
Step by Step Solution
- Step 1: Write the proportion equation
791,377.80 : 1,092,121.70 = 485,623.12 : x - Step 2: Convert to fraction form
791,377.80/1,092,121.70 = 485,623.12/x - Step 3: Cross multiply
791,377.80x = 1,092,121.70 × 485,623.12 - Step 4: Simplify right side
791,377.80x = 530,359,547,373.70 - Step 5: Solve for x
x = 530,359,547,373.70/791,377.80 - Step 6: Final answer
x = 670,172.38
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1.5x scale
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.