Finding the Fourth Proportional to 578,657.40, 867,986.10 and 157,975.80
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Solution
The fourth proportional to 578,657.40, 867,986.10 and 157,975.80 is: 236,963.70
Step by Step Solution
- Step 1: Write the proportion equation
578,657.40 : 867,986.10 = 157,975.80 : x - Step 2: Convert to fraction form
578,657.40/867,986.10 = 157,975.80/x - Step 3: Cross multiply
578,657.40x = 867,986.10 × 157,975.80 - Step 4: Simplify right side
578,657.40x = 137,120,798,536.38 - Step 5: Solve for x
x = 137,120,798,536.38/578,657.40 - Step 6: Final answer
x = 236,963.70
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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.