Finding the Fourth Proportional to 461,809.80, 692,714.70 and 312,121.80
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Solution
The fourth proportional to 461,809.80, 692,714.70 and 312,121.80 is: 468,182.70
Step by Step Solution
- Step 1: Write the proportion equation
461,809.80 : 692,714.70 = 312,121.80 : x - Step 2: Convert to fraction form
461,809.80/692,714.70 = 312,121.80/x - Step 3: Cross multiply
461,809.80x = 692,714.70 × 312,121.80 - Step 4: Simplify right side
461,809.80x = 216,211,359,050.46 - Step 5: Solve for x
x = 216,211,359,050.46/461,809.80 - Step 6: Final answer
x = 468,182.70
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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.