Finding the Fourth Proportional to 1,149,868,875.70, 1,724,803,313.55 and 320,820,915.70
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Solution
The fourth proportional to 1,149,868,875.70, 1,724,803,313.55 and 320,820,915.70 is: 481,231,373.55
Step by Step Solution
- Step 1: Write the proportion equation
1,149,868,875.70 : 1,724,803,313.55 = 320,820,915.70 : x - Step 2: Convert to fraction form
1,149,868,875.70/1,724,803,313.55 = 320,820,915.70/x - Step 3: Cross multiply
1,149,868,875.70x = 1,724,803,313.55 × 320,820,915.70 - Step 4: Simplify right side
1,149,868,875.70x = 553,352,978,455,505,152 - Step 5: Solve for x
x = 553,352,978,455,505,152/1,149,868,875.70 - Step 6: Final answer
x = 481,231,373.55
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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.