Finding the Fourth Proportional to 391,163,277.15, 586,835,671.35 and 128,838,414.30
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Solution
The fourth proportional to 391,163,277.15, 586,835,671.35 and 128,838,414.30 is: 193,287,513.85
Step by Step Solution
- Step 1: Write the proportion equation
391,163,277.15 : 586,835,671.35 = 128,838,414.30 : x - Step 2: Convert to fraction form
391,163,277.15/586,835,671.35 = 128,838,414.30/x - Step 3: Cross multiply
391,163,277.15x = 586,835,671.35 × 128,838,414.30 - Step 4: Simplify right side
391,163,277.15x = 75,606,977,351,409,936 - Step 5: Solve for x
x = 75,606,977,351,409,936/391,163,277.15 - Step 6: Final answer
x = 193,287,513.85
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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.