Finding the Fourth Proportional to 1,259,713,445.20, 1,889,570,167.80 and 647,493,413.20
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Solution
The fourth proportional to 1,259,713,445.20, 1,889,570,167.80 and 647,493,413.20 is: 971,240,119.80
Step by Step Solution
- Step 1: Write the proportion equation
1,259,713,445.20 : 1,889,570,167.80 = 647,493,413.20 : x - Step 2: Convert to fraction form
1,259,713,445.20/1,889,570,167.80 = 647,493,413.20/x - Step 3: Cross multiply
1,259,713,445.20x = 1,889,570,167.80 × 647,493,413.20 - Step 4: Simplify right side
1,259,713,445.20x = 1,223,484,237,429,718,784 - Step 5: Solve for x
x = 1,223,484,237,429,718,784/1,259,713,445.20 - Step 6: Final answer
x = 971,240,119.80
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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.