Finding the Fourth Proportional to 780,235,129.36, 1,076,880,901.95 and 462,871,531.55
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Solution
The fourth proportional to 780,235,129.36, 1,076,880,901.95 and 462,871,531.55 is: 638,855,511.15
Step by Step Solution
- Step 1: Write the proportion equation
780,235,129.36 : 1,076,880,901.95 = 462,871,531.55 : x - Step 2: Convert to fraction form
780,235,129.36/1,076,880,901.95 = 462,871,531.55/x - Step 3: Cross multiply
780,235,129.36x = 1,076,880,901.95 × 462,871,531.55 - Step 4: Simplify right side
780,235,129.36x = 498,457,512,385,234,112 - Step 5: Solve for x
x = 498,457,512,385,234,112/780,235,129.36 - Step 6: Final answer
x = 638,855,511.15
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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.