Finding the Fourth Proportional to 724,565,581.70, 1,086,848,372.55 and 239,891,389.70
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Solution
The fourth proportional to 724,565,581.70, 1,086,848,372.55 and 239,891,389.70 is: 359,837,084.55
Step by Step Solution
- Step 1: Write the proportion equation
724,565,581.70 : 1,086,848,372.55 = 239,891,389.70 : x - Step 2: Convert to fraction form
724,565,581.70/1,086,848,372.55 = 239,891,389.70/x - Step 3: Cross multiply
724,565,581.70x = 1,086,848,372.55 × 239,891,389.70 - Step 4: Simplify right side
724,565,581.70x = 260,725,566,484,202,816 - Step 5: Solve for x
x = 260,725,566,484,202,816/724,565,581.70 - Step 6: Final answer
x = 359,837,084.55
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Double scale
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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.