Finding the Fourth Proportional to 1,259,715,121.20, 1,889,572,681.80 and 848,545,124.40
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Solution
The fourth proportional to 1,259,715,121.20, 1,889,572,681.80 and 848,545,124.40 is: 1,272,817,686.60
Step by Step Solution
- Step 1: Write the proportion equation
1,259,715,121.20 : 1,889,572,681.80 = 848,545,124.40 : x - Step 2: Convert to fraction form
1,259,715,121.20/1,889,572,681.80 = 848,545,124.40/x - Step 3: Cross multiply
1,259,715,121.20x = 1,889,572,681.80 × 848,545,124.40 - Step 4: Simplify right side
1,259,715,121.20x = 1,603,387,686,340,822,528 - Step 5: Solve for x
x = 1,603,387,686,340,822,528/1,259,715,121.20 - Step 6: Final answer
x = 1,272,817,686.60
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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.