Finding the Fourth Proportional to 657,436,135.16, 907,262,750.82 and 356,021,972.42
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Solution
The fourth proportional to 657,436,135.16, 907,262,750.82 and 356,021,972.42 is: 491,310,800.81
Step by Step Solution
- Step 1: Write the proportion equation
657,436,135.16 : 907,262,750.82 = 356,021,972.42 : x - Step 2: Convert to fraction form
657,436,135.16/907,262,750.82 = 356,021,972.42/x - Step 3: Cross multiply
657,436,135.16x = 907,262,750.82 × 356,021,972.42 - Step 4: Simplify right side
657,436,135.16x = 323,005,474,050,131,392 - Step 5: Solve for x
x = 323,005,474,050,131,392/657,436,135.16 - Step 6: Final answer
x = 491,310,800.81
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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.