Finding the Fourth Proportional to 1,246,101,907.26, 1,869,156,026.69 and 509,171,812.74
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Solution
The fourth proportional to 1,246,101,907.26, 1,869,156,026.69 and 509,171,812.74 is: 763,759,012.69
Step by Step Solution
- Step 1: Write the proportion equation
1,246,101,907.26 : 1,869,156,026.69 = 509,171,812.74 : x - Step 2: Convert to fraction form
1,246,101,907.26/1,869,156,026.69 = 509,171,812.74/x - Step 3: Cross multiply
1,246,101,907.26x = 1,869,156,026.69 × 509,171,812.74 - Step 4: Simplify right side
1,246,101,907.26x = 951,721,562,399,390,336 - Step 5: Solve for x
x = 951,721,562,399,390,336/1,246,101,907.26 - Step 6: Final answer
x = 763,759,012.69
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Double scale
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1.5x scale
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.