Finding the Fourth Proportional to 709,678,848.05, 1,064,555,866.60 and 218,729,321.99
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Solution
The fourth proportional to 709,678,848.05, 1,064,555,866.60 and 218,729,321.99 is: 328,105,569.95
Step by Step Solution
- Step 1: Write the proportion equation
709,678,848.05 : 1,064,555,866.60 = 218,729,321.99 : x - Step 2: Convert to fraction form
709,678,848.05/1,064,555,866.60 = 218,729,321.99/x - Step 3: Cross multiply
709,678,848.05x = 1,064,555,866.60 × 218,729,321.99 - Step 4: Simplify right side
709,678,848.05x = 232,849,582,921,894,912 - Step 5: Solve for x
x = 232,849,582,921,894,912/709,678,848.05 - Step 6: Final answer
x = 328,105,569.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.