Finding the Fourth Proportional to 913,639,813.44, 1,260,824,542.08 and 495,952,382.40
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Solution
The fourth proportional to 913,639,813.44, 1,260,824,542.08 and 495,952,382.40 is: 684,415,155.99
Step by Step Solution
- Step 1: Write the proportion equation
913,639,813.44 : 1,260,824,542.08 = 495,952,382.40 : x - Step 2: Convert to fraction form
913,639,813.44/1,260,824,542.08 = 495,952,382.40/x - Step 3: Cross multiply
913,639,813.44x = 1,260,824,542.08 × 495,952,382.40 - Step 4: Simplify right side
913,639,813.44x = 625,308,935,432,964,992 - Step 5: Solve for x
x = 625,308,935,432,964,992/913,639,813.44 - Step 6: Final answer
x = 684,415,155.99
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1.5x scale
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.