Finding the Fourth Proportional to 3,149,306,810.80, 4,723,960,216.20 and 1,980,986,916.40
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Solution
The fourth proportional to 3,149,306,810.80, 4,723,960,216.20 and 1,980,986,916.40 is: 2,971,480,374.60
Step by Step Solution
- Step 1: Write the proportion equation
3,149,306,810.80 : 4,723,960,216.20 = 1,980,986,916.40 : x - Step 2: Convert to fraction form
3,149,306,810.80/4,723,960,216.20 = 1,980,986,916.40/x - Step 3: Cross multiply
3,149,306,810.80x = 4,723,960,216.20 × 1,980,986,916.40 - Step 4: Simplify right side
3,149,306,810.80x = 9,358,103,381,886,314,496 - Step 5: Solve for x
x = 9,358,103,381,886,314,496/3,149,306,810.80 - Step 6: Final answer
x = 2,971,480,374.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.