Finding the Fourth Proportional to 1,119,314,825.40, 1,678,972,238.10 and 536,749,201.20
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Solution
The fourth proportional to 1,119,314,825.40, 1,678,972,238.10 and 536,749,201.20 is: 805,123,801.80
Step by Step Solution
- Step 1: Write the proportion equation
1,119,314,825.40 : 1,678,972,238.10 = 536,749,201.20 : x - Step 2: Convert to fraction form
1,119,314,825.40/1,678,972,238.10 = 536,749,201.20/x - Step 3: Cross multiply
1,119,314,825.40x = 1,678,972,238.10 × 536,749,201.20 - Step 4: Simplify right side
1,119,314,825.40x = 901,187,007,637,151,104 - Step 5: Solve for x
x = 901,187,007,637,151,104/1,119,314,825.40 - Step 6: Final answer
x = 805,123,801.80
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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.