Finding the Fourth Proportional to 1,284,687,270.24, 1,772,868,432.87 and 727,770,317.28
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Solution
The fourth proportional to 1,284,687,270.24, 1,772,868,432.87 and 727,770,317.28 is: 1,004,323,037.81
Step by Step Solution
- Step 1: Write the proportion equation
1,284,687,270.24 : 1,772,868,432.87 = 727,770,317.28 : x - Step 2: Convert to fraction form
1,284,687,270.24/1,772,868,432.87 = 727,770,317.28/x - Step 3: Cross multiply
1,284,687,270.24x = 1,772,868,432.87 × 727,770,317.28 - Step 4: Simplify right side
1,284,687,270.24x = 1,290,241,021,885,496,064 - Step 5: Solve for x
x = 1,290,241,021,885,496,064/1,284,687,270.24 - Step 6: Final answer
x = 1,004,323,037.81
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.