Finding the Fourth Proportional to 485,200,206.80, 726,288,655.80 and 349,151,310.80
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Solution
The fourth proportional to 485,200,206.80, 726,288,655.80 and 349,151,310.80 is: 522,639,175.82
Step by Step Solution
- Step 1: Write the proportion equation
485,200,206.80 : 726,288,655.80 = 349,151,310.80 : x - Step 2: Convert to fraction form
485,200,206.80/726,288,655.80 = 349,151,310.80/x - Step 3: Cross multiply
485,200,206.80x = 726,288,655.80 × 349,151,310.80 - Step 4: Simplify right side
485,200,206.80x = 253,584,636,191,740,000 - Step 5: Solve for x
x = 253,584,636,191,740,000/485,200,206.80 - Step 6: Final answer
x = 522,639,175.82
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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.