Finding the Fourth Proportional to 1,289,386,363.20, 1,934,079,544.80 and 894,844,564.80
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Solution
The fourth proportional to 1,289,386,363.20, 1,934,079,544.80 and 894,844,564.80 is: 1,342,266,847.20
Step by Step Solution
- Step 1: Write the proportion equation
1,289,386,363.20 : 1,934,079,544.80 = 894,844,564.80 : x - Step 2: Convert to fraction form
1,289,386,363.20/1,934,079,544.80 = 894,844,564.80/x - Step 3: Cross multiply
1,289,386,363.20x = 1,934,079,544.80 × 894,844,564.80 - Step 4: Simplify right side
1,289,386,363.20x = 1,730,700,568,555,138,048 - Step 5: Solve for x
x = 1,730,700,568,555,138,048/1,289,386,363.20 - Step 6: Final answer
x = 1,342,266,847.20
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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.