Finding the Fourth Proportional to 839,808,708.80, 1,259,713,063.20 and 763,218,219.20
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Solution
The fourth proportional to 839,808,708.80, 1,259,713,063.20 and 763,218,219.20 is: 1,144,827,328.80
Step by Step Solution
- Step 1: Write the proportion equation
839,808,708.80 : 1,259,713,063.20 = 763,218,219.20 : x - Step 2: Convert to fraction form
839,808,708.80/1,259,713,063.20 = 763,218,219.20/x - Step 3: Cross multiply
839,808,708.80x = 1,259,713,063.20 × 763,218,219.20 - Step 4: Simplify right side
839,808,708.80x = 961,435,960,798,481,152 - Step 5: Solve for x
x = 961,435,960,798,481,152/839,808,708.80 - Step 6: Final answer
x = 1,144,827,328.80
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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.