Finding the Fourth Proportional to 1,021,878,580.46, 1,410,193,008.90 and 551,979,905.99
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Solution
The fourth proportional to 1,021,878,580.46, 1,410,193,008.90 and 551,979,905.99 is: 761,732,577.00
Step by Step Solution
- Step 1: Write the proportion equation
1,021,878,580.46 : 1,410,193,008.90 = 551,979,905.99 : x - Step 2: Convert to fraction form
1,021,878,580.46/1,410,193,008.90 = 551,979,905.99/x - Step 3: Cross multiply
1,021,878,580.46x = 1,410,193,008.90 × 551,979,905.99 - Step 4: Simplify right side
1,021,878,580.46x = 778,398,204,473,326,336 - Step 5: Solve for x
x = 778,398,204,473,326,336/1,021,878,580.46 - Step 6: Final answer
x = 761,732,577.00
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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.