Finding the Fourth Proportional to 743,759,350.65, 1,115,639,025.98 and 698,409,718.65
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Solution
The fourth proportional to 743,759,350.65, 1,115,639,025.98 and 698,409,718.65 is: 1,047,614,577.98
Step by Step Solution
- Step 1: Write the proportion equation
743,759,350.65 : 1,115,639,025.98 = 698,409,718.65 : x - Step 2: Convert to fraction form
743,759,350.65/1,115,639,025.98 = 698,409,718.65/x - Step 3: Cross multiply
743,759,350.65x = 1,115,639,025.98 × 698,409,718.65 - Step 4: Simplify right side
743,759,350.65x = 779,173,138,246,159,744 - Step 5: Solve for x
x = 779,173,138,246,159,744/743,759,350.65 - Step 6: Final answer
x = 1,047,614,577.98
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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.