Finding the Fourth Proportional to 812,695.84, 1,122,274.14 and 608,392.08
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Solution
The fourth proportional to 812,695.84, 1,122,274.14 and 608,392.08 is: 840,145.42
Step by Step Solution
- Step 1: Write the proportion equation
812,695.84 : 1,122,274.14 = 608,392.08 : x - Step 2: Convert to fraction form
812,695.84/1,122,274.14 = 608,392.08/x - Step 3: Cross multiply
812,695.84x = 1,122,274.14 × 608,392.08 - Step 4: Simplify right side
812,695.84x = 682,782,695,198.71 - Step 5: Solve for x
x = 682,782,695,198.71/812,695.84 - Step 6: Final answer
x = 840,145.42
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1.5x scale
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.