Finding the Fourth Proportional to 4,813,867.21, 6,643,106.13 and 2,638,545.79
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Solution
The fourth proportional to 4,813,867.21, 6,643,106.13 and 2,638,545.79 is: 3,641,176.41
Step by Step Solution
- Step 1: Write the proportion equation
4,813,867.21 : 6,643,106.13 = 2,638,545.79 : x - Step 2: Convert to fraction form
4,813,867.21/6,643,106.13 = 2,638,545.79/x - Step 3: Cross multiply
4,813,867.21x = 6,643,106.13 × 2,638,545.79 - Step 4: Simplify right side
4,813,867.21x = 17,528,139,710,156.39 - Step 5: Solve for x
x = 17,528,139,710,156.39/4,813,867.21 - Step 6: Final answer
x = 3,641,176.41
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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.