Finding the Fourth Proportional to 1,278,740.52, 1,917,119.34 and 828,510.12
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Solution
The fourth proportional to 1,278,740.52, 1,917,119.34 and 828,510.12 is: 1,242,122.82
Step by Step Solution
- Step 1: Write the proportion equation
1,278,740.52 : 1,917,119.34 = 828,510.12 : x - Step 2: Convert to fraction form
1,278,740.52/1,917,119.34 = 828,510.12/x - Step 3: Cross multiply
1,278,740.52x = 1,917,119.34 × 828,510.12 - Step 4: Simplify right side
1,278,740.52x = 1,588,352,774,437.72 - Step 5: Solve for x
x = 1,588,352,774,437.72/1,278,740.52 - Step 6: Final answer
x = 1,242,122.82
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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.