Finding the Fourth Proportional to 839,808,163.20, 1,259,712,244.80 and 768,382,492.80
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Solution
The fourth proportional to 839,808,163.20, 1,259,712,244.80 and 768,382,492.80 is: 1,152,573,739.20
Step by Step Solution
- Step 1: Write the proportion equation
839,808,163.20 : 1,259,712,244.80 = 768,382,492.80 : x - Step 2: Convert to fraction form
839,808,163.20/1,259,712,244.80 = 768,382,492.80/x - Step 3: Cross multiply
839,808,163.20x = 1,259,712,244.80 × 768,382,492.80 - Step 4: Simplify right side
839,808,163.20x = 967,940,834,870,107,776 - Step 5: Solve for x
x = 967,940,834,870,107,776/839,808,163.20 - Step 6: Final answer
x = 1,152,573,739.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.