Finding the Fourth Proportional to 757,133,719.20, 1,135,700,578.80 and 485,035,927.20
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Solution
The fourth proportional to 757,133,719.20, 1,135,700,578.80 and 485,035,927.20 is: 727,553,890.80
Step by Step Solution
- Step 1: Write the proportion equation
757,133,719.20 : 1,135,700,578.80 = 485,035,927.20 : x - Step 2: Convert to fraction form
757,133,719.20/1,135,700,578.80 = 485,035,927.20/x - Step 3: Cross multiply
757,133,719.20x = 1,135,700,578.80 × 485,035,927.20 - Step 4: Simplify right side
757,133,719.20x = 550,855,583,259,834,624 - Step 5: Solve for x
x = 550,855,583,259,834,624/757,133,719.20 - Step 6: Final answer
x = 727,553,890.80
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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.