Finding the Fourth Proportional to 821,403,141.12, 1,133,537,126.40 and 450,125,998.08
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Solution
The fourth proportional to 821,403,141.12, 1,133,537,126.40 and 450,125,998.08 is: 621,174,311.17
Step by Step Solution
- Step 1: Write the proportion equation
821,403,141.12 : 1,133,537,126.40 = 450,125,998.08 : x - Step 2: Convert to fraction form
821,403,141.12/1,133,537,126.40 = 450,125,998.08/x - Step 3: Cross multiply
821,403,141.12x = 1,133,537,126.40 × 450,125,998.08 - Step 4: Simplify right side
821,403,141.12x = 510,234,530,381,535,168 - Step 5: Solve for x
x = 510,234,530,381,535,168/821,403,141.12 - Step 6: Final answer
x = 621,174,311.17
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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.