Finding the Fourth Proportional to 487,543.80, 731,315.70 and 369,445.80
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Solution
The fourth proportional to 487,543.80, 731,315.70 and 369,445.80 is: 554,168.70
Step by Step Solution
- Step 1: Write the proportion equation
487,543.80 : 731,315.70 = 369,445.80 : x - Step 2: Convert to fraction form
487,543.80/731,315.70 = 369,445.80/x - Step 3: Cross multiply
487,543.80x = 731,315.70 × 369,445.80 - Step 4: Simplify right side
487,543.80x = 270,181,513,839.06 - Step 5: Solve for x
x = 270,181,513,839.06/487,543.80 - Step 6: Final answer
x = 554,168.70
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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.