Finding the Fourth Proportional to 461,347.70, 692,021.55 and 128,923.70
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Solution
The fourth proportional to 461,347.70, 692,021.55 and 128,923.70 is: 193,385.55
Step by Step Solution
- Step 1: Write the proportion equation
461,347.70 : 692,021.55 = 128,923.70 : x - Step 2: Convert to fraction form
461,347.70/692,021.55 = 128,923.70/x - Step 3: Cross multiply
461,347.70x = 692,021.55 × 128,923.70 - Step 4: Simplify right side
461,347.70x = 89,217,978,705.74 - Step 5: Solve for x
x = 89,217,978,705.74/461,347.70 - Step 6: Final answer
x = 193,385.55
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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.