Finding the Fourth Proportional to 812,515,113.93, 1,121,614,132.68 and 548,554,667.79
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Solution
The fourth proportional to 812,515,113.93, 1,121,614,132.68 and 548,554,667.79 is: 757,237,197.67
Step by Step Solution
- Step 1: Write the proportion equation
812,515,113.93 : 1,121,614,132.68 = 548,554,667.79 : x - Step 2: Convert to fraction form
812,515,113.93/1,121,614,132.68 = 548,554,667.79/x - Step 3: Cross multiply
812,515,113.93x = 1,121,614,132.68 × 548,554,667.79 - Step 4: Simplify right side
812,515,113.93x = 615,266,667,940,846,336 - Step 5: Solve for x
x = 615,266,667,940,846,336/812,515,113.93 - Step 6: Final answer
x = 757,237,197.67
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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.