Finding the Fourth Proportional to 381,657,869.20, 572,486,803.80 and 260,725,517.20
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Solution
The fourth proportional to 381,657,869.20, 572,486,803.80 and 260,725,517.20 is: 391,088,275.80
Step by Step Solution
- Step 1: Write the proportion equation
381,657,869.20 : 572,486,803.80 = 260,725,517.20 : x - Step 2: Convert to fraction form
381,657,869.20/572,486,803.80 = 260,725,517.20/x - Step 3: Cross multiply
381,657,869.20x = 572,486,803.80 × 260,725,517.20 - Step 4: Simplify right side
381,657,869.20x = 149,261,918,010,929,920 - Step 5: Solve for x
x = 149,261,918,010,929,920/381,657,869.20 - Step 6: Final answer
x = 391,088,275.80
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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.