Finding the Fourth Proportional to 1,288,560.12, 1,778,164.26 and 715,637.19
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Solution
The fourth proportional to 1,288,560.12, 1,778,164.26 and 715,637.19 is: 987,552.27
Step by Step Solution
- Step 1: Write the proportion equation
1,288,560.12 : 1,778,164.26 = 715,637.19 : x - Step 2: Convert to fraction form
1,288,560.12/1,778,164.26 = 715,637.19/x - Step 3: Cross multiply
1,288,560.12x = 1,778,164.26 × 715,637.19 - Step 4: Simplify right side
1,288,560.12x = 1,272,520,474,384.83 - Step 5: Solve for x
x = 1,272,520,474,384.83/1,288,560.12 - Step 6: Final answer
x = 987,552.27
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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.