Finding the Fourth Proportional to 726,386,465.80, 1,089,579,698.70 and 624,349,793.80
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Solution
The fourth proportional to 726,386,465.80, 1,089,579,698.70 and 624,349,793.80 is: 936,524,690.70
Step by Step Solution
- Step 1: Write the proportion equation
726,386,465.80 : 1,089,579,698.70 = 624,349,793.80 : x - Step 2: Convert to fraction form
726,386,465.80/1,089,579,698.70 = 624,349,793.80/x - Step 3: Cross multiply
726,386,465.80x = 1,089,579,698.70 × 624,349,793.80 - Step 4: Simplify right side
726,386,465.80x = 680,278,860,212,011,136 - Step 5: Solve for x
x = 680,278,860,212,011,136/726,386,465.80 - Step 6: Final answer
x = 936,524,690.70
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Double scale
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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.