Finding the Fourth Proportional to 1,251,764,160.16, 1,727,483,122.62 and 687,272,835.14
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Solution
The fourth proportional to 1,251,764,160.16, 1,727,483,122.62 and 687,272,835.14 is: 948,463,185.90
Step by Step Solution
- Step 1: Write the proportion equation
1,251,764,160.16 : 1,727,483,122.62 = 687,272,835.14 : x - Step 2: Convert to fraction form
1,251,764,160.16/1,727,483,122.62 = 687,272,835.14/x - Step 3: Cross multiply
1,251,764,160.16x = 1,727,483,122.62 × 687,272,835.14 - Step 4: Simplify right side
1,251,764,160.16x = 1,187,252,223,339,547,648 - Step 5: Solve for x
x = 1,187,252,223,339,547,648/1,251,764,160.16 - Step 6: Final answer
x = 948,463,185.90
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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.