Finding the Fourth Proportional to 1,123,576,319.80, 1,685,364,479.70 and 305,688,620.80
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Solution
The fourth proportional to 1,123,576,319.80, 1,685,364,479.70 and 305,688,620.80 is: 458,532,931.20
Step by Step Solution
- Step 1: Write the proportion equation
1,123,576,319.80 : 1,685,364,479.70 = 305,688,620.80 : x - Step 2: Convert to fraction form
1,123,576,319.80/1,685,364,479.70 = 305,688,620.80/x - Step 3: Cross multiply
1,123,576,319.80x = 1,685,364,479.70 × 305,688,620.80 - Step 4: Simplify right side
1,123,576,319.80x = 515,196,743,344,802,624 - Step 5: Solve for x
x = 515,196,743,344,802,624/1,123,576,319.80 - Step 6: Final answer
x = 458,532,931.20
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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.