Finding the Fourth Proportional to 1,221,866.76, 1,686,095.10 and 677,968.08
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Solution
The fourth proportional to 1,221,866.76, 1,686,095.10 and 677,968.08 is: 935,550.99
Step by Step Solution
- Step 1: Write the proportion equation
1,221,866.76 : 1,686,095.10 = 677,968.08 : x - Step 2: Convert to fraction form
1,221,866.76/1,686,095.10 = 677,968.08/x - Step 3: Cross multiply
1,221,866.76x = 1,686,095.10 × 677,968.08 - Step 4: Simplify right side
1,221,866.76x = 1,143,118,657,644.41 - Step 5: Solve for x
x = 1,143,118,657,644.41/1,221,866.76 - Step 6: Final answer
x = 935,550.99
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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.