Finding the Fourth Proportional to 7,691,820.71, 10,617,980.95 and 4,792,643.99
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Solution
The fourth proportional to 7,691,820.71, 10,617,980.95 and 4,792,643.99 is: 6,615,885.16
Step by Step Solution
- Step 1: Write the proportion equation
7,691,820.71 : 10,617,980.95 = 4,792,643.99 : x - Step 2: Convert to fraction form
7,691,820.71/10,617,980.95 = 4,792,643.99/x - Step 3: Cross multiply
7,691,820.71x = 10,617,980.95 × 4,792,643.99 - Step 4: Simplify right side
7,691,820.71x = 50,888,202,520,880.48 - Step 5: Solve for x
x = 50,888,202,520,880.48/7,691,820.71 - Step 6: Final answer
x = 6,615,885.16
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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.