Finding the Fourth Proportional to 916,343,816.80, 1,373,004,070.80 and 780,294,920.80
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Solution
The fourth proportional to 916,343,816.80, 1,373,004,070.80 and 780,294,920.80 is: 1,169,155,161.02
Step by Step Solution
- Step 1: Write the proportion equation
916,343,816.80 : 1,373,004,070.80 = 780,294,920.80 : x - Step 2: Convert to fraction form
916,343,816.80/1,373,004,070.80 = 780,294,920.80/x - Step 3: Cross multiply
916,343,816.80x = 1,373,004,070.80 × 780,294,920.80 - Step 4: Simplify right side
916,343,816.80x = 1,071,348,102,682,963,456 - Step 5: Solve for x
x = 1,071,348,102,682,963,456/916,343,816.80 - Step 6: Final answer
x = 1,169,155,161.02
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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.