Finding the Fourth Proportional to 5,179,283,652.64, 7,147,117,980.40 and 2,921,088,209.10
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Solution
The fourth proportional to 5,179,283,652.64, 7,147,117,980.40 and 2,921,088,209.10 is: 4,030,936,218.55
Step by Step Solution
- Step 1: Write the proportion equation
5,179,283,652.64 : 7,147,117,980.40 = 2,921,088,209.10 : x - Step 2: Convert to fraction form
5,179,283,652.64/7,147,117,980.40 = 2,921,088,209.10/x - Step 3: Cross multiply
5,179,283,652.64x = 7,147,117,980.40 × 2,921,088,209.10 - Step 4: Simplify right side
5,179,283,652.64x = 20,877,362,061,564,555,264 - Step 5: Solve for x
x = 20,877,362,061,564,555,264/5,179,283,652.64 - Step 6: Final answer
x = 4,030,936,218.55
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1.5x scale
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.