Finding the Fourth Proportional to 1,547,439,350.85, 2,135,457,208.37 and 842,589,644.63
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Solution
The fourth proportional to 1,547,439,350.85, 2,135,457,208.37 and 842,589,644.63 is: 1,162,768,756.87
Step by Step Solution
- Step 1: Write the proportion equation
1,547,439,350.85 : 2,135,457,208.37 = 842,589,644.63 : x - Step 2: Convert to fraction form
1,547,439,350.85/2,135,457,208.37 = 842,589,644.63/x - Step 3: Cross multiply
1,547,439,350.85x = 2,135,457,208.37 × 842,589,644.63 - Step 4: Simplify right side
1,547,439,350.85x = 1,799,314,130,314,479,360 - Step 5: Solve for x
x = 1,799,314,130,314,479,360/1,547,439,350.85 - Step 6: Final answer
x = 1,162,768,756.87
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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.