Finding the Fourth Proportional to 670,617.70, 1,005,926.55 and 316,323.70
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Solution
The fourth proportional to 670,617.70, 1,005,926.55 and 316,323.70 is: 474,485.55
Step by Step Solution
- Step 1: Write the proportion equation
670,617.70 : 1,005,926.55 = 316,323.70 : x - Step 2: Convert to fraction form
670,617.70/1,005,926.55 = 316,323.70/x - Step 3: Cross multiply
670,617.70x = 1,005,926.55 × 316,323.70 - Step 4: Simplify right side
670,617.70x = 318,198,408,224.24 - Step 5: Solve for x
x = 318,198,408,224.24/670,617.70 - Step 6: Final answer
x = 474,485.55
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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.