Finding the Fourth Proportional to 905,615.49, 1,249,722.95 and 518,418.08
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Solution
The fourth proportional to 905,615.49, 1,249,722.95 and 518,418.08 is: 715,401.82
Step by Step Solution
- Step 1: Write the proportion equation
905,615.49 : 1,249,722.95 = 518,418.08 : x - Step 2: Convert to fraction form
905,615.49/1,249,722.95 = 518,418.08/x - Step 3: Cross multiply
905,615.49x = 1,249,722.95 × 518,418.08 - Step 4: Simplify right side
905,615.49x = 647,878,972,270.94 - Step 5: Solve for x
x = 647,878,972,270.94/905,615.49 - Step 6: Final answer
x = 715,401.82
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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.