Finding the Fourth Proportional to 7,769,147,812.80, 11,653,721,719.20 and 6,952,854,436.80
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Solution
The fourth proportional to 7,769,147,812.80, 11,653,721,719.20 and 6,952,854,436.80 is: 10,429,281,655.20
Step by Step Solution
- Step 1: Write the proportion equation
7,769,147,812.80 : 11,653,721,719.20 = 6,952,854,436.80 : x - Step 2: Convert to fraction form
7,769,147,812.80/11,653,721,719.20 = 6,952,854,436.80/x - Step 3: Cross multiply
7,769,147,812.80x = 11,653,721,719.20 × 6,952,854,436.80 - Step 4: Simplify right side
7,769,147,812.80x = 81,026,630,760,572,256,256 - Step 5: Solve for x
x = 81,026,630,760,572,256,256/7,769,147,812.80 - Step 6: Final answer
x = 10,429,281,655.20
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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.