Finding the Fourth Proportional to 485,280,887.70, 727,921,331.55 and 370,489,631.70
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Solution
The fourth proportional to 485,280,887.70, 727,921,331.55 and 370,489,631.70 is: 555,734,447.55
Step by Step Solution
- Step 1: Write the proportion equation
485,280,887.70 : 727,921,331.55 = 370,489,631.70 : x - Step 2: Convert to fraction form
485,280,887.70/727,921,331.55 = 370,489,631.70/x - Step 3: Cross multiply
485,280,887.70x = 727,921,331.55 × 370,489,631.70 - Step 4: Simplify right side
485,280,887.70x = 269,687,306,032,533,056 - Step 5: Solve for x
x = 269,687,306,032,533,056/485,280,887.70 - Step 6: Final answer
x = 555,734,447.55
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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.