Finding the Fourth Proportional to 1,018,398.18, 1,405,434 and 565,689.18
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Solution
The fourth proportional to 1,018,398.18, 1,405,434 and 565,689.18 is: 780,675.79
Step by Step Solution
- Step 1: Write the proportion equation
1,018,398.18 : 1,405,434 = 565,689.18 : x - Step 2: Convert to fraction form
1,018,398.18/1,405,434 = 565,689.18/x - Step 3: Cross multiply
1,018,398.18x = 1,405,434 × 565,689.18 - Step 4: Simplify right side
1,018,398.18x = 795,038,807,004.12 - Step 5: Solve for x
x = 795,038,807,004.12/1,018,398.18 - Step 6: Final answer
x = 780,675.79
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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.