Finding the Fourth Proportional to 689,467.80, 1,034,201.70 and 190,831.80
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Solution
The fourth proportional to 689,467.80, 1,034,201.70 and 190,831.80 is: 286,247.70
Step by Step Solution
- Step 1: Write the proportion equation
689,467.80 : 1,034,201.70 = 190,831.80 : x - Step 2: Convert to fraction form
689,467.80/1,034,201.70 = 190,831.80/x - Step 3: Cross multiply
689,467.80x = 1,034,201.70 × 190,831.80 - Step 4: Simplify right side
689,467.80x = 197,358,571,974.06 - Step 5: Solve for x
x = 197,358,571,974.06/689,467.80 - Step 6: Final answer
x = 286,247.70
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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.