Finding the Fourth Proportional to 1,913,860,280, 2,641,128,249.12 and 1,033,793,992.64
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Solution
The fourth proportional to 1,913,860,280, 2,641,128,249.12 and 1,033,793,992.64 is: 1,426,636,283.88
Step by Step Solution
- Step 1: Write the proportion equation
1,913,860,280 : 2,641,128,249.12 = 1,033,793,992.64 : x - Step 2: Convert to fraction form
1,913,860,280/2,641,128,249.12 = 1,033,793,992.64/x - Step 3: Cross multiply
1,913,860,280x = 2,641,128,249.12 × 1,033,793,992.64 - Step 4: Simplify right side
1,913,860,280x = 2,730,382,517,732,057,088 - Step 5: Solve for x
x = 2,730,382,517,732,057,088/1,913,860,280 - Step 6: Final answer
x = 1,426,636,283.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.