Finding the Fourth Proportional to 920,557.19, 1,270,865.95 and 645,756.99
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Solution
The fourth proportional to 920,557.19, 1,270,865.95 and 645,756.99 is: 891,493.30
Step by Step Solution
- Step 1: Write the proportion equation
920,557.19 : 1,270,865.95 = 645,756.99 : x - Step 2: Convert to fraction form
920,557.19/1,270,865.95 = 645,756.99/x - Step 3: Cross multiply
920,557.19x = 1,270,865.95 × 645,756.99 - Step 4: Simplify right side
920,557.19x = 820,670,570,565.49 - Step 5: Solve for x
x = 820,670,570,565.49/920,557.19 - Step 6: Final answer
x = 891,493.30
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.