Finding the Fourth Proportional to 1,221,137.77, 1,685,270.78 and 677,448.55
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Solution
The fourth proportional to 1,221,137.77, 1,685,270.78 and 677,448.55 is: 934,934.84
Step by Step Solution
- Step 1: Write the proportion equation
1,221,137.77 : 1,685,270.78 = 677,448.55 : x - Step 2: Convert to fraction form
1,221,137.77/1,685,270.78 = 677,448.55/x - Step 3: Cross multiply
1,221,137.77x = 1,685,270.78 × 677,448.55 - Step 4: Simplify right side
1,221,137.77x = 1,141,684,242,881.13 - Step 5: Solve for x
x = 1,141,684,242,881.13/1,221,137.77 - Step 6: Final answer
x = 934,934.84
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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.