Finding the Fourth Proportional to 905,615.38, 1,249,779.20 and 497,731.68
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Solution
The fourth proportional to 905,615.38, 1,249,779.20 and 497,731.68 is: 686,886.19
Step by Step Solution
- Step 1: Write the proportion equation
905,615.38 : 1,249,779.20 = 497,731.68 : x - Step 2: Convert to fraction form
905,615.38/1,249,779.20 = 497,731.68/x - Step 3: Cross multiply
905,615.38x = 1,249,779.20 × 497,731.68 - Step 4: Simplify right side
905,615.38x = 622,054,700,845.06 - Step 5: Solve for x
x = 622,054,700,845.06/905,615.38 - Step 6: Final answer
x = 686,886.19
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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.