Finding the Fourth Proportional to 785,021,698.92, 1,083,315,914.62 and 427,792,579.08
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Solution
The fourth proportional to 785,021,698.92, 1,083,315,914.62 and 427,792,579.08 is: 590,346,113.63
Step by Step Solution
- Step 1: Write the proportion equation
785,021,698.92 : 1,083,315,914.62 = 427,792,579.08 : x - Step 2: Convert to fraction form
785,021,698.92/1,083,315,914.62 = 427,792,579.08/x - Step 3: Cross multiply
785,021,698.92x = 1,083,315,914.62 × 427,792,579.08 - Step 4: Simplify right side
785,021,698.92x = 463,434,509,073,698,816 - Step 5: Solve for x
x = 463,434,509,073,698,816/785,021,698.92 - Step 6: Final answer
x = 590,346,113.63
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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.