Finding the Fourth Proportional to 685,168,179.99, 945,507,623.25 and 387,804,037.44
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Solution
The fourth proportional to 685,168,179.99, 945,507,623.25 and 387,804,037.44 is: 535,155,724.44
Step by Step Solution
- Step 1: Write the proportion equation
685,168,179.99 : 945,507,623.25 = 387,804,037.44 : x - Step 2: Convert to fraction form
685,168,179.99/945,507,623.25 = 387,804,037.44/x - Step 3: Cross multiply
685,168,179.99x = 945,507,623.25 × 387,804,037.44 - Step 4: Simplify right side
685,168,179.99x = 366,671,673,726,648,384 - Step 5: Solve for x
x = 366,671,673,726,648,384/685,168,179.99 - Step 6: Final answer
x = 535,155,724.44
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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.