Finding the Fourth Proportional to 438,395,212.71, 604,986,107.94 and 240,152,355.99
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Solution
The fourth proportional to 438,395,212.71, 604,986,107.94 and 240,152,355.99 is: 331,410,642.61
Step by Step Solution
- Step 1: Write the proportion equation
438,395,212.71 : 604,986,107.94 = 240,152,355.99 : x - Step 2: Convert to fraction form
438,395,212.71/604,986,107.94 = 240,152,355.99/x - Step 3: Cross multiply
438,395,212.71x = 604,986,107.94 × 240,152,355.99 - Step 4: Simplify right side
438,395,212.71x = 145,288,839,163,011,456 - Step 5: Solve for x
x = 145,288,839,163,011,456/438,395,212.71 - Step 6: Final answer
x = 331,410,642.61
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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.