Finding the Fourth Proportional to 689,496,899.80, 1,034,245,349.70 and 603,403,457.80
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Solution
The fourth proportional to 689,496,899.80, 1,034,245,349.70 and 603,403,457.80 is: 905,105,186.70
Step by Step Solution
- Step 1: Write the proportion equation
689,496,899.80 : 1,034,245,349.70 = 603,403,457.80 : x - Step 2: Convert to fraction form
689,496,899.80/1,034,245,349.70 = 603,403,457.80/x - Step 3: Cross multiply
689,496,899.80x = 1,034,245,349.70 × 603,403,457.80 - Step 4: Simplify right side
689,496,899.80x = 624,067,220,222,550,144 - Step 5: Solve for x
x = 624,067,220,222,550,144/689,496,899.80 - Step 6: Final answer
x = 905,105,186.70
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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.