Finding the Fourth Proportional to 719,240,933.84, 992,552,489.88 and 389,216,072.72
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Solution
The fourth proportional to 719,240,933.84, 992,552,489.88 and 389,216,072.72 is: 537,118,180.99
Step by Step Solution
- Step 1: Write the proportion equation
719,240,933.84 : 992,552,489.88 = 389,216,072.72 : x - Step 2: Convert to fraction form
719,240,933.84/992,552,489.88 = 389,216,072.72/x - Step 3: Cross multiply
719,240,933.84x = 992,552,489.88 × 389,216,072.72 - Step 4: Simplify right side
719,240,933.84x = 386,317,382,079,551,168 - Step 5: Solve for x
x = 386,317,382,079,551,168/719,240,933.84 - Step 6: Final answer
x = 537,118,180.99
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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.