Finding the Fourth Proportional to 652,532,135.40, 978,798,203.10 and 394,543,117.80
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Solution
The fourth proportional to 652,532,135.40, 978,798,203.10 and 394,543,117.80 is: 591,814,676.70
Step by Step Solution
- Step 1: Write the proportion equation
652,532,135.40 : 978,798,203.10 = 394,543,117.80 : x - Step 2: Convert to fraction form
652,532,135.40/978,798,203.10 = 394,543,117.80/x - Step 3: Cross multiply
652,532,135.40x = 978,798,203.10 × 394,543,117.80 - Step 4: Simplify right side
652,532,135.40x = 386,178,094,748,111,616 - Step 5: Solve for x
x = 386,178,094,748,111,616/652,532,135.40 - Step 6: Final answer
x = 591,814,676.70
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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.