Finding the Fourth Proportional to 1,292,912,155.99, 1,939,368,259.73 and 310,338,695.49
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Solution
The fourth proportional to 1,292,912,155.99, 1,939,368,259.73 and 310,338,695.49 is: 465,508,049.41
Step by Step Solution
- Step 1: Write the proportion equation
1,292,912,155.99 : 1,939,368,259.73 = 310,338,695.49 : x - Step 2: Convert to fraction form
1,292,912,155.99/1,939,368,259.73 = 310,338,695.49/x - Step 3: Cross multiply
1,292,912,155.99x = 1,939,368,259.73 × 310,338,695.49 - Step 4: Simplify right side
1,292,912,155.99x = 601,861,015,799,319,680 - Step 5: Solve for x
x = 601,861,015,799,319,680/1,292,912,155.99 - Step 6: Final answer
x = 465,508,049.41
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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.