Finding the Fourth Proportional to 1,243,358.70, 1,866,420.45 and 770,577.90
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Solution
The fourth proportional to 1,243,358.70, 1,866,420.45 and 770,577.90 is: 1,156,723.60
Step by Step Solution
- Step 1: Write the proportion equation
1,243,358.70 : 1,866,420.45 = 770,577.90 : x - Step 2: Convert to fraction form
1,243,358.70/1,866,420.45 = 770,577.90/x - Step 3: Cross multiply
1,243,358.70x = 1,866,420.45 × 770,577.90 - Step 4: Simplify right side
1,243,358.70x = 1,438,222,350,878.06 - Step 5: Solve for x
x = 1,438,222,350,878.06/1,243,358.70 - Step 6: Final answer
x = 1,156,723.60
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.