Finding the Fourth Proportional to 1,118,256,991.68, 1,543,199,325.36 and 616,454,762.43
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Solution
The fourth proportional to 1,118,256,991.68, 1,543,199,325.36 and 616,454,762.43 is: 850,710,150.33
Step by Step Solution
- Step 1: Write the proportion equation
1,118,256,991.68 : 1,543,199,325.36 = 616,454,762.43 : x - Step 2: Convert to fraction form
1,118,256,991.68/1,543,199,325.36 = 616,454,762.43/x - Step 3: Cross multiply
1,118,256,991.68x = 1,543,199,325.36 × 616,454,762.43 - Step 4: Simplify right side
1,118,256,991.68x = 951,312,573,496,934,912 - Step 5: Solve for x
x = 951,312,573,496,934,912/1,118,256,991.68 - Step 6: Final answer
x = 850,710,150.33
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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.