Finding the Fourth Proportional to 1,390,585,682.07, 2,085,879,272.13 and 517,073,548.95
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Solution
The fourth proportional to 1,390,585,682.07, 2,085,879,272.13 and 517,073,548.95 is: 775,610,601.94
Step by Step Solution
- Step 1: Write the proportion equation
1,390,585,682.07 : 2,085,879,272.13 = 517,073,548.95 : x - Step 2: Convert to fraction form
1,390,585,682.07/2,085,879,272.13 = 517,073,548.95/x - Step 3: Cross multiply
1,390,585,682.07x = 2,085,879,272.13 × 517,073,548.95 - Step 4: Simplify right side
1,390,585,682.07x = 1,078,552,997,921,501,952 - Step 5: Solve for x
x = 1,078,552,997,921,501,952/1,390,585,682.07 - Step 6: Final answer
x = 775,610,601.94
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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.