Finding the Fourth Proportional to 1,115,416.05, 1,539,269.98 and 632,073.66
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Solution
The fourth proportional to 1,115,416.05, 1,539,269.98 and 632,073.66 is: 872,259.29
Step by Step Solution
- Step 1: Write the proportion equation
1,115,416.05 : 1,539,269.98 = 632,073.66 : x - Step 2: Convert to fraction form
1,115,416.05/1,539,269.98 = 632,073.66/x - Step 3: Cross multiply
1,115,416.05x = 1,539,269.98 × 632,073.66 - Step 4: Simplify right side
1,115,416.05x = 972,932,009,986.73 - Step 5: Solve for x
x = 972,932,009,986.73/1,115,416.05 - Step 6: Final answer
x = 872,259.29
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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.