Finding the Fourth Proportional to 1,262,780.40, 1,742,674.44 and 689,830.08
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Solution
The fourth proportional to 1,262,780.40, 1,742,674.44 and 689,830.08 is: 951,985.99
Step by Step Solution
- Step 1: Write the proportion equation
1,262,780.40 : 1,742,674.44 = 689,830.08 : x - Step 2: Convert to fraction form
1,262,780.40/1,742,674.44 = 689,830.08/x - Step 3: Cross multiply
1,262,780.40x = 1,742,674.44 × 689,830.08 - Step 4: Simplify right side
1,262,780.40x = 1,202,149,248,359.16 - Step 5: Solve for x
x = 1,202,149,248,359.16/1,262,780.40 - Step 6: Final answer
x = 951,985.99
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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.