Finding the Fourth Proportional to 442,880,139.80, 664,320,209.70 and 422,724,747.80
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Solution
The fourth proportional to 442,880,139.80, 664,320,209.70 and 422,724,747.80 is: 634,087,121.70
Step by Step Solution
- Step 1: Write the proportion equation
442,880,139.80 : 664,320,209.70 = 422,724,747.80 : x - Step 2: Convert to fraction form
442,880,139.80/664,320,209.70 = 422,724,747.80/x - Step 3: Cross multiply
442,880,139.80x = 664,320,209.70 × 422,724,747.80 - Step 4: Simplify right side
442,880,139.80x = 280,824,593,103,875,648 - Step 5: Solve for x
x = 280,824,593,103,875,648/442,880,139.80 - Step 6: Final answer
x = 634,087,121.70
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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.