Finding the Fourth Proportional to 1,187,340.84, 1,638,536.04 and 643,477.68
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Solution
The fourth proportional to 1,187,340.84, 1,638,536.04 and 643,477.68 is: 888,002.28
Step by Step Solution
- Step 1: Write the proportion equation
1,187,340.84 : 1,638,536.04 = 643,477.68 : x - Step 2: Convert to fraction form
1,187,340.84/1,638,536.04 = 643,477.68/x - Step 3: Cross multiply
1,187,340.84x = 1,638,536.04 × 643,477.68 - Step 4: Simplify right side
1,187,340.84x = 1,054,361,369,615.59 - Step 5: Solve for x
x = 1,054,361,369,615.59/1,187,340.84 - Step 6: Final answer
x = 888,002.28
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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.