Finding the Fourth Proportional to 420,944,669.79, 580,907,403.09 and 232,785,695.58
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Solution
The fourth proportional to 420,944,669.79, 580,907,403.09 and 232,785,695.58 is: 321,246,338.54
Step by Step Solution
- Step 1: Write the proportion equation
420,944,669.79 : 580,907,403.09 = 232,785,695.58 : x - Step 2: Convert to fraction form
420,944,669.79/580,907,403.09 = 232,785,695.58/x - Step 3: Cross multiply
420,944,669.79x = 580,907,403.09 × 232,785,695.58 - Step 4: Simplify right side
420,944,669.79x = 135,226,933,895,877,104 - Step 5: Solve for x
x = 135,226,933,895,877,104/420,944,669.79 - Step 6: Final answer
x = 321,246,338.54
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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.