Finding the Fourth Proportional to 905,411.76, 1,249,467.84 and 497,539.92
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Solution
The fourth proportional to 905,411.76, 1,249,467.84 and 497,539.92 is: 686,604.88
Step by Step Solution
- Step 1: Write the proportion equation
905,411.76 : 1,249,467.84 = 497,539.92 : x - Step 2: Convert to fraction form
905,411.76/1,249,467.84 = 497,539.92/x - Step 3: Cross multiply
905,411.76x = 1,249,467.84 × 497,539.92 - Step 4: Simplify right side
905,411.76x = 621,660,129,156.17 - Step 5: Solve for x
x = 621,660,129,156.17/905,411.76 - Step 6: Final answer
x = 686,604.88
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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.