Finding the Fourth Proportional to 787,605.84, 1,088,367.36 and 644,313.60
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Solution
The fourth proportional to 787,605.84, 1,088,367.36 and 644,313.60 is: 890,356.39
Step by Step Solution
- Step 1: Write the proportion equation
787,605.84 : 1,088,367.36 = 644,313.60 : x - Step 2: Convert to fraction form
787,605.84/1,088,367.36 = 644,313.60/x - Step 3: Cross multiply
787,605.84x = 1,088,367.36 × 644,313.60 - Step 4: Simplify right side
787,605.84x = 701,249,891,844.10 - Step 5: Solve for x
x = 701,249,891,844.10/787,605.84 - Step 6: Final answer
x = 890,356.39
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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.