Finding the Fourth Proportional to 7,038,347.85, 9,712,651.02 and 3,940,581.42
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Solution
The fourth proportional to 7,038,347.85, 9,712,651.02 and 3,940,581.42 is: 5,437,851.75
Step by Step Solution
- Step 1: Write the proportion equation
7,038,347.85 : 9,712,651.02 = 3,940,581.42 : x - Step 2: Convert to fraction form
7,038,347.85/9,712,651.02 = 3,940,581.42/x - Step 3: Cross multiply
7,038,347.85x = 9,712,651.02 × 3,940,581.42 - Step 4: Simplify right side
7,038,347.85x = 38,273,492,148,356.05 - Step 5: Solve for x
x = 38,273,492,148,356.05/7,038,347.85 - Step 6: Final answer
x = 5,437,851.75
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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.