Finding the Fourth Proportional to 657,933,601.70, 986,900,402.55 and 528,793,438.70
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Solution
The fourth proportional to 657,933,601.70, 986,900,402.55 and 528,793,438.70 is: 793,190,158.05
Step by Step Solution
- Step 1: Write the proportion equation
657,933,601.70 : 986,900,402.55 = 528,793,438.70 : x - Step 2: Convert to fraction form
657,933,601.70/986,900,402.55 = 528,793,438.70/x - Step 3: Cross multiply
657,933,601.70x = 986,900,402.55 × 528,793,438.70 - Step 4: Simplify right side
657,933,601.70x = 521,866,457,518,828,736 - Step 5: Solve for x
x = 521,866,457,518,828,736/657,933,601.70 - Step 6: Final answer
x = 793,190,158.05
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Double scale
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Similar ratio
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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.