Finding the Fourth Proportional to 871,920.80, 1,306,909.20 and 339,264.80
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Solution
The fourth proportional to 871,920.80, 1,306,909.20 and 339,264.80 is: 508,518.99
Step by Step Solution
- Step 1: Write the proportion equation
871,920.80 : 1,306,909.20 = 339,264.80 : x - Step 2: Convert to fraction form
871,920.80/1,306,909.20 = 339,264.80/x - Step 3: Cross multiply
871,920.80x = 1,306,909.20 × 339,264.80 - Step 4: Simplify right side
871,920.80x = 443,388,288,356.16 - Step 5: Solve for x
x = 443,388,288,356.16/871,920.80 - Step 6: Final answer
x = 508,518.99
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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.