Finding the Fourth Proportional to 485,005,201.20, 727,507,801.80 and 239,479,459.20
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Solution
The fourth proportional to 485,005,201.20, 727,507,801.80 and 239,479,459.20 is: 359,219,188.80
Step by Step Solution
- Step 1: Write the proportion equation
485,005,201.20 : 727,507,801.80 = 239,479,459.20 : x - Step 2: Convert to fraction form
485,005,201.20/727,507,801.80 = 239,479,459.20/x - Step 3: Cross multiply
485,005,201.20x = 727,507,801.80 × 239,479,459.20 - Step 4: Simplify right side
485,005,201.20x = 174,223,174,938,844,768 - Step 5: Solve for x
x = 174,223,174,938,844,768/485,005,201.20 - Step 6: Final answer
x = 359,219,188.80
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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.