Finding the Fourth Proportional to 515,271,497.80, 772,907,246.70 and 515,271,497.80
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Solution
The fourth proportional to 515,271,497.80, 772,907,246.70 and 515,271,497.80 is: 772,907,246.70
Step by Step Solution
- Step 1: Write the proportion equation
515,271,497.80 : 772,907,246.70 = 515,271,497.80 : x - Step 2: Convert to fraction form
515,271,497.80/772,907,246.70 = 515,271,497.80/x - Step 3: Cross multiply
515,271,497.80x = 772,907,246.70 × 515,271,497.80 - Step 4: Simplify right side
515,271,497.80x = 398,257,074,667,583,168 - Step 5: Solve for x
x = 398,257,074,667,583,168/515,271,497.80 - Step 6: Final answer
x = 772,907,246.70
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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.