Finding the Fourth Proportional to 1,438,626,603.26, 1,985,283,756.61 and 803,556,131.87
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Solution
The fourth proportional to 1,438,626,603.26, 1,985,283,756.61 and 803,556,131.87 is: 1,108,895,756.91
Step by Step Solution
- Step 1: Write the proportion equation
1,438,626,603.26 : 1,985,283,756.61 = 803,556,131.87 : x - Step 2: Convert to fraction form
1,438,626,603.26/1,985,283,756.61 = 803,556,131.87/x - Step 3: Cross multiply
1,438,626,603.26x = 1,985,283,756.61 × 803,556,131.87 - Step 4: Simplify right side
1,438,626,603.26x = 1,595,286,936,128,828,416 - Step 5: Solve for x
x = 1,595,286,936,128,828,416/1,438,626,603.26 - Step 6: Final answer
x = 1,108,895,756.91
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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.