Finding the Fourth Proportional to 553,203,905.70, 829,805,858.55 and 521,459,163.30
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Solution
The fourth proportional to 553,203,905.70, 829,805,858.55 and 521,459,163.30 is: 782,188,744.95
Step by Step Solution
- Step 1: Write the proportion equation
553,203,905.70 : 829,805,858.55 = 521,459,163.30 : x - Step 2: Convert to fraction form
553,203,905.70/829,805,858.55 = 521,459,163.30/x - Step 3: Cross multiply
553,203,905.70x = 829,805,858.55 × 521,459,163.30 - Step 4: Simplify right side
553,203,905.70x = 432,709,868,700,921,152 - Step 5: Solve for x
x = 432,709,868,700,921,152/553,203,905.70 - Step 6: Final answer
x = 782,188,744.95
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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.