Finding the Fourth Proportional to 420,171,249.68, 579,933,070.44 and 246,386,980.88
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Solution
The fourth proportional to 420,171,249.68, 579,933,070.44 and 246,386,980.88 is: 340,070,765.07
Step by Step Solution
- Step 1: Write the proportion equation
420,171,249.68 : 579,933,070.44 = 246,386,980.88 : x - Step 2: Convert to fraction form
420,171,249.68/579,933,070.44 = 246,386,980.88/x - Step 3: Cross multiply
420,171,249.68x = 579,933,070.44 × 246,386,980.88 - Step 4: Simplify right side
420,171,249.68x = 142,887,958,338,179,984 - Step 5: Solve for x
x = 142,887,958,338,179,984/420,171,249.68 - Step 6: Final answer
x = 340,070,765.07
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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.