Finding the Fourth Proportional to 389,644,233.74, 537,708,872.65 and 211,028,130.26
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Solution
The fourth proportional to 389,644,233.74, 537,708,872.65 and 211,028,130.26 is: 291,218,727.74
Step by Step Solution
- Step 1: Write the proportion equation
389,644,233.74 : 537,708,872.65 = 211,028,130.26 : x - Step 2: Convert to fraction form
389,644,233.74/537,708,872.65 = 211,028,130.26/x - Step 3: Cross multiply
389,644,233.74x = 537,708,872.65 × 211,028,130.26 - Step 4: Simplify right side
389,644,233.74x = 113,471,698,018,529,024 - Step 5: Solve for x
x = 113,471,698,018,529,024/389,644,233.74 - Step 6: Final answer
x = 291,218,727.74
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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.