Finding the Fourth Proportional to 842,042,252.70, 1,161,959,318.78 and 489,593,238.71
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Solution
The fourth proportional to 842,042,252.70, 1,161,959,318.78 and 489,593,238.71 is: 675,604,370.56
Step by Step Solution
- Step 1: Write the proportion equation
842,042,252.70 : 1,161,959,318.78 = 489,593,238.71 : x - Step 2: Convert to fraction form
842,042,252.70/1,161,959,318.78 = 489,593,238.71/x - Step 3: Cross multiply
842,042,252.70x = 1,161,959,318.78 × 489,593,238.71 - Step 4: Simplify right side
842,042,252.70x = 568,887,426,122,507,776 - Step 5: Solve for x
x = 568,887,426,122,507,776/842,042,252.70 - Step 6: Final answer
x = 675,604,370.56
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1.5x scale
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.