Finding the Fourth Proportional to 636,539,756.94, 878,444,394.80 and 354,297,877.49
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Solution
The fourth proportional to 636,539,756.94, 878,444,394.80 and 354,297,877.49 is: 488,941,941.45
Step by Step Solution
- Step 1: Write the proportion equation
636,539,756.94 : 878,444,394.80 = 354,297,877.49 : x - Step 2: Convert to fraction form
636,539,756.94/878,444,394.80 = 354,297,877.49/x - Step 3: Cross multiply
636,539,756.94x = 878,444,394.80 × 354,297,877.49 - Step 4: Simplify right side
636,539,756.94x = 311,230,984,571,052,224 - Step 5: Solve for x
x = 311,230,984,571,052,224/636,539,756.94 - Step 6: Final answer
x = 488,941,941.45
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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.