Finding the Fourth Proportional to 2,153,873.68, 2,972,345.73 and 1,187,003.97
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Solution
The fourth proportional to 2,153,873.68, 2,972,345.73 and 1,187,003.97 is: 1,638,065.50
Step by Step Solution
- Step 1: Write the proportion equation
2,153,873.68 : 2,972,345.73 = 1,187,003.97 : x - Step 2: Convert to fraction form
2,153,873.68/2,972,345.73 = 1,187,003.97/x - Step 3: Cross multiply
2,153,873.68x = 2,972,345.73 × 1,187,003.97 - Step 4: Simplify right side
2,153,873.68x = 3,528,186,177,271.28 - Step 5: Solve for x
x = 3,528,186,177,271.28/2,153,873.68 - Step 6: Final answer
x = 1,638,065.50
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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.