Finding the Fourth Proportional to 1,357,983,253.09, 2,037,201,701.61 and 425,120,452.72
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Solution
The fourth proportional to 1,357,983,253.09, 2,037,201,701.61 and 425,120,452.72 is: 637,751,686.33
Step by Step Solution
- Step 1: Write the proportion equation
1,357,983,253.09 : 2,037,201,701.61 = 425,120,452.72 : x - Step 2: Convert to fraction form
1,357,983,253.09/2,037,201,701.61 = 425,120,452.72/x - Step 3: Cross multiply
1,357,983,253.09x = 2,037,201,701.61 × 425,120,452.72 - Step 4: Simplify right side
1,357,983,253.09x = 866,056,109,668,272,000 - Step 5: Solve for x
x = 866,056,109,668,272,000/1,357,983,253.09 - Step 6: Final answer
x = 637,751,686.33
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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.