Finding the Fourth Proportional to 771,397.40, 1,152,405.12 and 499,309.09
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Solution
The fourth proportional to 771,397.40, 1,152,405.12 and 499,309.09 is: 745,927.26
Step by Step Solution
- Step 1: Write the proportion equation
771,397.40 : 1,152,405.12 = 499,309.09 : x - Step 2: Convert to fraction form
771,397.40/1,152,405.12 = 499,309.09/x - Step 3: Cross multiply
771,397.40x = 1,152,405.12 × 499,309.09 - Step 4: Simplify right side
771,397.40x = 575,406,351,778.54 - Step 5: Solve for x
x = 575,406,351,778.54/771,397.40 - Step 6: Final answer
x = 745,927.26
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.