Finding the Fourth Proportional to 742,423.12, 1,024,014.62 and 681,366.13
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Solution
The fourth proportional to 742,423.12, 1,024,014.62 and 681,366.13 is: 939,799.50
Step by Step Solution
- Step 1: Write the proportion equation
742,423.12 : 1,024,014.62 = 681,366.13 : x - Step 2: Convert to fraction form
742,423.12/1,024,014.62 = 681,366.13/x - Step 3: Cross multiply
742,423.12x = 1,024,014.62 × 681,366.13 - Step 4: Simplify right side
742,423.12x = 697,728,877,836.20 - Step 5: Solve for x
x = 697,728,877,836.20/742,423.12 - Step 6: Final answer
x = 939,799.50
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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.