Finding the Fourth Proportional to 485,752,372.66, 728,458,073.44 and 135,904,430.20
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Solution
The fourth proportional to 485,752,372.66, 728,458,073.44 and 135,904,430.20 is: 203,808,946.63
Step by Step Solution
- Step 1: Write the proportion equation
485,752,372.66 : 728,458,073.44 = 135,904,430.20 : x - Step 2: Convert to fraction form
485,752,372.66/728,458,073.44 = 135,904,430.20/x - Step 3: Cross multiply
485,752,372.66x = 728,458,073.44 × 135,904,430.20 - Step 4: Simplify right side
485,752,372.66x = 99,000,679,395,452,960 - Step 5: Solve for x
x = 99,000,679,395,452,960/485,752,372.66 - Step 6: Final answer
x = 203,808,946.63
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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.