Finding the Fourth Proportional to 786,724,807.68, 1,085,651,780.16 and 434,293,234.08
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Solution
The fourth proportional to 786,724,807.68, 1,085,651,780.16 and 434,293,234.08 is: 599,308,955.42
Step by Step Solution
- Step 1: Write the proportion equation
786,724,807.68 : 1,085,651,780.16 = 434,293,234.08 : x - Step 2: Convert to fraction form
786,724,807.68/1,085,651,780.16 = 434,293,234.08/x - Step 3: Cross multiply
786,724,807.68x = 1,085,651,780.16 × 434,293,234.08 - Step 4: Simplify right side
786,724,807.68x = 471,491,222,690,395,584 - Step 5: Solve for x
x = 471,491,222,690,395,584/786,724,807.68 - Step 6: Final answer
x = 599,308,955.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.