Finding the Fourth Proportional to 780,363.18, 1,076,988.58 and 440,853.30
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Solution
The fourth proportional to 780,363.18, 1,076,988.58 and 440,853.30 is: 608,426.92
Step by Step Solution
- Step 1: Write the proportion equation
780,363.18 : 1,076,988.58 = 440,853.30 : x - Step 2: Convert to fraction form
780,363.18/1,076,988.58 = 440,853.30/x - Step 3: Cross multiply
780,363.18x = 1,076,988.58 × 440,853.30 - Step 4: Simplify right side
780,363.18x = 474,793,969,555.31 - Step 5: Solve for x
x = 474,793,969,555.31/780,363.18 - Step 6: Final answer
x = 608,426.92
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1.5x scale
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.