Finding the Fourth Proportional to 514,903,782.78, 710,591,512.68 and 291,889,786.68
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Solution
The fourth proportional to 514,903,782.78, 710,591,512.68 and 291,889,786.68 is: 402,821,676.57
Step by Step Solution
- Step 1: Write the proportion equation
514,903,782.78 : 710,591,512.68 = 291,889,786.68 : x - Step 2: Convert to fraction form
514,903,782.78/710,591,512.68 = 291,889,786.68/x - Step 3: Cross multiply
514,903,782.78x = 710,591,512.68 × 291,889,786.68 - Step 4: Simplify right side
514,903,782.78x = 207,414,405,052,783,712 - Step 5: Solve for x
x = 207,414,405,052,783,712/514,903,782.78 - Step 6: Final answer
x = 402,821,676.57
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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.