Finding the Fourth Proportional to 389,943,952.20, 538,180,409.86 and 246,903,010.68
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Solution
The fourth proportional to 389,943,952.20, 538,180,409.86 and 246,903,010.68 is: 340,762,724.32
Step by Step Solution
- Step 1: Write the proportion equation
389,943,952.20 : 538,180,409.86 = 246,903,010.68 : x - Step 2: Convert to fraction form
389,943,952.20/538,180,409.86 = 246,903,010.68/x - Step 3: Cross multiply
389,943,952.20x = 538,180,409.86 × 246,903,010.68 - Step 4: Simplify right side
389,943,952.20x = 132,878,363,484,836,640 - Step 5: Solve for x
x = 132,878,363,484,836,640/389,943,952.20 - Step 6: Final answer
x = 340,762,724.32
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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.