Finding the Fourth Proportional to 1,259,718,004.20, 1,889,577,006.30 and 865,176,205.80
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Solution
The fourth proportional to 1,259,718,004.20, 1,889,577,006.30 and 865,176,205.80 is: 1,297,764,308.70
Step by Step Solution
- Step 1: Write the proportion equation
1,259,718,004.20 : 1,889,577,006.30 = 865,176,205.80 : x - Step 2: Convert to fraction form
1,259,718,004.20/1,889,577,006.30 = 865,176,205.80/x - Step 3: Cross multiply
1,259,718,004.20x = 1,889,577,006.30 × 865,176,205.80 - Step 4: Simplify right side
1,259,718,004.20x = 1,634,817,064,877,556,480 - Step 5: Solve for x
x = 1,634,817,064,877,556,480/1,259,718,004.20 - Step 6: Final answer
x = 1,297,764,308.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.