Finding the Fourth Proportional to 427,153,862.93, 640,792,193.84 and 132,071,995.03
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Solution
The fourth proportional to 427,153,862.93, 640,792,193.84 and 132,071,995.03 is: 198,126,976.68
Step by Step Solution
- Step 1: Write the proportion equation
427,153,862.93 : 640,792,193.84 = 132,071,995.03 : x - Step 2: Convert to fraction form
427,153,862.93/640,792,193.84 = 132,071,995.03/x - Step 3: Cross multiply
427,153,862.93x = 640,792,193.84 × 132,071,995.03 - Step 4: Simplify right side
427,153,862.93x = 84,630,703,441,337,520 - Step 5: Solve for x
x = 84,630,703,441,337,520/427,153,862.93 - Step 6: Final answer
x = 198,126,976.68
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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.