Finding the Fourth Proportional to 1,207,265,974.65, 1,810,896,701.70 and 378,283,079.70
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Solution
The fourth proportional to 1,207,265,974.65, 1,810,896,701.70 and 378,283,079.70 is: 567,423,911.32
Step by Step Solution
- Step 1: Write the proportion equation
1,207,265,974.65 : 1,810,896,701.70 = 378,283,079.70 : x - Step 2: Convert to fraction form
1,207,265,974.65/1,810,896,701.70 = 378,283,079.70/x - Step 3: Cross multiply
1,207,265,974.65x = 1,810,896,701.70 × 378,283,079.70 - Step 4: Simplify right side
1,207,265,974.65x = 685,031,581,337,648,256 - Step 5: Solve for x
x = 685,031,581,337,648,256/1,207,265,974.65 - Step 6: Final answer
x = 567,423,911.32
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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.