Finding the Fourth Proportional to 624,158,967.87, 861,353,293.68 and 356,229,426.36
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Solution
The fourth proportional to 624,158,967.87, 861,353,293.68 and 356,229,426.36 is: 491,604,551.88
Step by Step Solution
- Step 1: Write the proportion equation
624,158,967.87 : 861,353,293.68 = 356,229,426.36 : x - Step 2: Convert to fraction form
624,158,967.87/861,353,293.68 = 356,229,426.36/x - Step 3: Cross multiply
624,158,967.87x = 861,353,293.68 × 356,229,426.36 - Step 4: Simplify right side
624,158,967.87x = 306,839,389,700,923,008 - Step 5: Solve for x
x = 306,839,389,700,923,008/624,158,967.87 - Step 6: Final answer
x = 491,604,551.88
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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.