Finding the Fourth Proportional to 1,319,302.68, 1,820,641.20 and 715,690.68
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Solution
The fourth proportional to 1,319,302.68, 1,820,641.20 and 715,690.68 is: 987,655.04
Step by Step Solution
- Step 1: Write the proportion equation
1,319,302.68 : 1,820,641.20 = 715,690.68 : x - Step 2: Convert to fraction form
1,319,302.68/1,820,641.20 = 715,690.68/x - Step 3: Cross multiply
1,319,302.68x = 1,820,641.20 × 715,690.68 - Step 4: Simplify right side
1,319,302.68x = 1,303,015,938,464.02 - Step 5: Solve for x
x = 1,303,015,938,464.02/1,319,302.68 - Step 6: Final answer
x = 987,655.04
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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.