Finding the Fourth Proportional to 766,421.14, 1,148,916.88 and 260,636.49
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Solution
The fourth proportional to 766,421.14, 1,148,916.88 and 260,636.49 is: 390,711.64
Step by Step Solution
- Step 1: Write the proportion equation
766,421.14 : 1,148,916.88 = 260,636.49 : x - Step 2: Convert to fraction form
766,421.14/1,148,916.88 = 260,636.49/x - Step 3: Cross multiply
766,421.14x = 1,148,916.88 × 260,636.49 - Step 4: Simplify right side
766,421.14x = 299,449,662,904.95 - Step 5: Solve for x
x = 299,449,662,904.95/766,421.14 - Step 6: Final answer
x = 390,711.64
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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.