Finding the Fourth Proportional to 1,319,319.18, 1,820,663.97 and 715,707.18
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Solution
The fourth proportional to 1,319,319.18, 1,820,663.97 and 715,707.18 is: 987,677.81
Step by Step Solution
- Step 1: Write the proportion equation
1,319,319.18 : 1,820,663.97 = 715,707.18 : x - Step 2: Convert to fraction form
1,319,319.18/1,820,663.97 = 715,707.18/x - Step 3: Cross multiply
1,319,319.18x = 1,820,663.97 × 715,707.18 - Step 4: Simplify right side
1,319,319.18x = 1,303,062,275,696.30 - Step 5: Solve for x
x = 1,303,062,275,696.30/1,319,319.18 - Step 6: Final answer
x = 987,677.81
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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.