Finding the Fourth Proportional to 685,995.84, 1,028,994.18 and 286,418.88
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Solution
The fourth proportional to 685,995.84, 1,028,994.18 and 286,418.88 is: 429,628.50
Step by Step Solution
- Step 1: Write the proportion equation
685,995.84 : 1,028,994.18 = 286,418.88 : x - Step 2: Convert to fraction form
685,995.84/1,028,994.18 = 286,418.88/x - Step 3: Cross multiply
685,995.84x = 1,028,994.18 × 286,418.88 - Step 4: Simplify right side
685,995.84x = 294,723,360,562.12 - Step 5: Solve for x
x = 294,723,360,562.12/685,995.84 - Step 6: Final answer
x = 429,628.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.