Finding the Fourth Proportional to 312,432,844.05, 468,649,266.08 and 261,792,421.65
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Solution
The fourth proportional to 312,432,844.05, 468,649,266.08 and 261,792,421.65 is: 392,688,632.48
Step by Step Solution
- Step 1: Write the proportion equation
312,432,844.05 : 468,649,266.08 = 261,792,421.65 : x - Step 2: Convert to fraction form
312,432,844.05/468,649,266.08 = 261,792,421.65/x - Step 3: Cross multiply
312,432,844.05x = 468,649,266.08 × 261,792,421.65 - Step 4: Simplify right side
312,432,844.05x = 122,688,826,270,269,440 - Step 5: Solve for x
x = 122,688,826,270,269,440/312,432,844.05 - Step 6: Final answer
x = 392,688,632.48
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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.