Finding the Fourth Proportional to 7,124,539,528.92, 10,689,773,331.75 and 3,138,583,668.31
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Solution
The fourth proportional to 7,124,539,528.92, 10,689,773,331.75 and 3,138,583,668.31 is: 4,709,181,254.56
Step by Step Solution
- Step 1: Write the proportion equation
7,124,539,528.92 : 10,689,773,331.75 = 3,138,583,668.31 : x - Step 2: Convert to fraction form
7,124,539,528.92/10,689,773,331.75 = 3,138,583,668.31/x - Step 3: Cross multiply
7,124,539,528.92x = 10,689,773,331.75 × 3,138,583,668.31 - Step 4: Simplify right side
7,124,539,528.92x = 33,550,747,996,966,326,272 - Step 5: Solve for x
x = 33,550,747,996,966,326,272/7,124,539,528.92 - Step 6: Final answer
x = 4,709,181,254.56
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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.