Finding the Fourth Proportional to 7,339,642.16, 10,128,831.36 and 4,032,075.44
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Solution
The fourth proportional to 7,339,642.16, 10,128,831.36 and 4,032,075.44 is: 5,564,332.88
Step by Step Solution
- Step 1: Write the proportion equation
7,339,642.16 : 10,128,831.36 = 4,032,075.44 : x - Step 2: Convert to fraction form
7,339,642.16/10,128,831.36 = 4,032,075.44/x - Step 3: Cross multiply
7,339,642.16x = 10,128,831.36 × 4,032,075.44 - Step 4: Simplify right side
7,339,642.16x = 40,840,212,162,557.80 - Step 5: Solve for x
x = 40,840,212,162,557.80/7,339,642.16 - Step 6: Final answer
x = 5,564,332.88
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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.