Finding the Fourth Proportional to 1,403,508,164.49, 1,936,764,534.65 and 768,305,775.68
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Solution
The fourth proportional to 1,403,508,164.49, 1,936,764,534.65 and 768,305,775.68 is: 1,060,219,965.75
Step by Step Solution
- Step 1: Write the proportion equation
1,403,508,164.49 : 1,936,764,534.65 = 768,305,775.68 : x - Step 2: Convert to fraction form
1,403,508,164.49/1,936,764,534.65 = 768,305,775.68/x - Step 3: Cross multiply
1,403,508,164.49x = 1,936,764,534.65 × 768,305,775.68 - Step 4: Simplify right side
1,403,508,164.49x = 1,488,027,378,090,257,152 - Step 5: Solve for x
x = 1,488,027,378,090,257,152/1,403,508,164.49 - Step 6: Final answer
x = 1,060,219,965.75
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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.