Finding the Fourth Proportional to 1,252,387,450.71, 1,728,315,497.70 and 687,924,526.23
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Solution
The fourth proportional to 1,252,387,450.71, 1,728,315,497.70 and 687,924,526.23 is: 949,347,280.07
Step by Step Solution
- Step 1: Write the proportion equation
1,252,387,450.71 : 1,728,315,497.70 = 687,924,526.23 : x - Step 2: Convert to fraction form
1,252,387,450.71/1,728,315,497.70 = 687,924,526.23/x - Step 3: Cross multiply
1,252,387,450.71x = 1,728,315,497.70 × 687,924,526.23 - Step 4: Simplify right side
1,252,387,450.71x = 1,188,950,619,931,239,168 - Step 5: Solve for x
x = 1,188,950,619,931,239,168/1,252,387,450.71 - Step 6: Final answer
x = 949,347,280.07
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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.