Finding the Fourth Proportional to 839,808,619.80, 1,259,712,929.70 and 732,313,195.80
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Solution
The fourth proportional to 839,808,619.80, 1,259,712,929.70 and 732,313,195.80 is: 1,098,469,793.70
Step by Step Solution
- Step 1: Write the proportion equation
839,808,619.80 : 1,259,712,929.70 = 732,313,195.80 : x - Step 2: Convert to fraction form
839,808,619.80/1,259,712,929.70 = 732,313,195.80/x - Step 3: Cross multiply
839,808,619.80x = 1,259,712,929.70 × 732,313,195.80 - Step 4: Simplify right side
839,808,619.80x = 922,504,401,339,187,712 - Step 5: Solve for x
x = 922,504,401,339,187,712/839,808,619.80 - Step 6: Final answer
x = 1,098,469,793.70
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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.