Finding the Fourth Proportional to 905,614.49, 1,249,721.57 and 518,417.08
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Solution
The fourth proportional to 905,614.49, 1,249,721.57 and 518,417.08 is: 715,400.44
Step by Step Solution
- Step 1: Write the proportion equation
905,614.49 : 1,249,721.57 = 518,417.08 : x - Step 2: Convert to fraction form
905,614.49/1,249,721.57 = 518,417.08/x - Step 3: Cross multiply
905,614.49x = 1,249,721.57 × 518,417.08 - Step 4: Simplify right side
905,614.49x = 647,877,005,304.15 - Step 5: Solve for x
x = 647,877,005,304.15/905,614.49 - Step 6: Final answer
x = 715,400.44
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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.