Finding the Fourth Proportional to 1,390,585,689.08, 2,085,879,282.64 and 517,073,555.96
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Solution
The fourth proportional to 1,390,585,689.08, 2,085,879,282.64 and 517,073,555.96 is: 775,610,612.45
Step by Step Solution
- Step 1: Write the proportion equation
1,390,585,689.08 : 2,085,879,282.64 = 517,073,555.96 : x - Step 2: Convert to fraction form
1,390,585,689.08/2,085,879,282.64 = 517,073,555.96/x - Step 3: Cross multiply
1,390,585,689.08x = 2,085,879,282.64 × 517,073,555.96 - Step 4: Simplify right side
1,390,585,689.08x = 1,078,553,017,977,958,656 - Step 5: Solve for x
x = 1,078,553,017,977,958,656/1,390,585,689.08 - Step 6: Final answer
x = 775,610,612.45
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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.