Finding the Fourth Proportional to 605,698.20, 908,547.30 and 393,121.80
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Solution
The fourth proportional to 605,698.20, 908,547.30 and 393,121.80 is: 589,682.70
Step by Step Solution
- Step 1: Write the proportion equation
605,698.20 : 908,547.30 = 393,121.80 : x - Step 2: Convert to fraction form
605,698.20/908,547.30 = 393,121.80/x - Step 3: Cross multiply
605,698.20x = 908,547.30 × 393,121.80 - Step 4: Simplify right side
605,698.20x = 357,169,749,961.14 - Step 5: Solve for x
x = 357,169,749,961.14/605,698.20 - Step 6: Final answer
x = 589,682.70
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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.