Finding the Fourth Proportional to 748,128,939.65, 1,032,373,564.85 and 413,581,510.98
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Solution
The fourth proportional to 748,128,939.65, 1,032,373,564.85 and 413,581,510.98 is: 570,717,955.45
Step by Step Solution
- Step 1: Write the proportion equation
748,128,939.65 : 1,032,373,564.85 = 413,581,510.98 : x - Step 2: Convert to fraction form
748,128,939.65/1,032,373,564.85 = 413,581,510.98/x - Step 3: Cross multiply
748,128,939.65x = 1,032,373,564.85 × 413,581,510.98 - Step 4: Simplify right side
748,128,939.65x = 426,970,618,847,505,984 - Step 5: Solve for x
x = 426,970,618,847,505,984/748,128,939.65 - Step 6: Final answer
x = 570,717,955.45
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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.