Finding the Fourth Proportional to 378,779,862.58, 522,567,484.23 and 219,982,953.58
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Solution
The fourth proportional to 378,779,862.58, 522,567,484.23 and 219,982,953.58 is: 303,490,100.67
Step by Step Solution
- Step 1: Write the proportion equation
378,779,862.58 : 522,567,484.23 = 219,982,953.58 : x - Step 2: Convert to fraction form
378,779,862.58/522,567,484.23 = 219,982,953.58/x - Step 3: Cross multiply
378,779,862.58x = 522,567,484.23 × 219,982,953.58 - Step 4: Simplify right side
378,779,862.58x = 114,955,938,625,785,488 - Step 5: Solve for x
x = 114,955,938,625,785,488/378,779,862.58 - Step 6: Final answer
x = 303,490,100.67
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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.