Finding the Fourth Proportional to 2,156,423.40, 3,235,412.70 and 2,078,663.40
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Solution
The fourth proportional to 2,156,423.40, 3,235,412.70 and 2,078,663.40 is: 3,118,744.66
Step by Step Solution
- Step 1: Write the proportion equation
2,156,423.40 : 3,235,412.70 = 2,078,663.40 : x - Step 2: Convert to fraction form
2,156,423.40/3,235,412.70 = 2,078,663.40/x - Step 3: Cross multiply
2,156,423.40x = 3,235,412.70 × 2,078,663.40 - Step 4: Simplify right side
2,156,423.40x = 6,725,333,963,385.18 - Step 5: Solve for x
x = 6,725,333,963,385.18/2,156,423.40 - Step 6: Final answer
x = 3,118,744.66
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1.5x scale
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.