Finding the Fourth Proportional to 659,686,162.91, 909,948,567.27 and 405,256,181.63
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Solution
The fourth proportional to 659,686,162.91, 909,948,567.27 and 405,256,181.63 is: 558,996,538.93
Step by Step Solution
- Step 1: Write the proportion equation
659,686,162.91 : 909,948,567.27 = 405,256,181.63 : x - Step 2: Convert to fraction form
659,686,162.91/909,948,567.27 = 405,256,181.63/x - Step 3: Cross multiply
659,686,162.91x = 909,948,567.27 × 405,256,181.63 - Step 4: Simplify right side
659,686,162.91x = 368,762,281,846,979,648 - Step 5: Solve for x
x = 368,762,281,846,979,648/659,686,162.91 - Step 6: Final answer
x = 558,996,538.93
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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.