Finding the Fourth Proportional to 7,402,418.36, 10,215,279.60 and 4,139,239.40
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Solution
The fourth proportional to 7,402,418.36, 10,215,279.60 and 4,139,239.40 is: 5,712,118.09
Step by Step Solution
- Step 1: Write the proportion equation
7,402,418.36 : 10,215,279.60 = 4,139,239.40 : x - Step 2: Convert to fraction form
7,402,418.36/10,215,279.60 = 4,139,239.40/x - Step 3: Cross multiply
7,402,418.36x = 10,215,279.60 × 4,139,239.40 - Step 4: Simplify right side
7,402,418.36x = 42,283,487,802,336.23 - Step 5: Solve for x
x = 42,283,487,802,336.23/7,402,418.36 - Step 6: Final answer
x = 5,712,118.09
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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.