Finding the Fourth Proportional to 717,940,619.73, 990,834,225.57 and 420,832,502.28
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Solution
The fourth proportional to 717,940,619.73, 990,834,225.57 and 420,832,502.28 is: 580,793,501.62
Step by Step Solution
- Step 1: Write the proportion equation
717,940,619.73 : 990,834,225.57 = 420,832,502.28 : x - Step 2: Convert to fraction form
717,940,619.73/990,834,225.57 = 420,832,502.28/x - Step 3: Cross multiply
717,940,619.73x = 990,834,225.57 × 420,832,502.28 - Step 4: Simplify right side
717,940,619.73x = 416,975,246,491,289,024 - Step 5: Solve for x
x = 416,975,246,491,289,024/717,940,619.73 - Step 6: Final answer
x = 580,793,501.62
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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.