Finding the Fourth Proportional to 4,249,840.80, 6,378,908.40 and 2,122,327.20
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Solution
The fourth proportional to 4,249,840.80, 6,378,908.40 and 2,122,327.20 is: 3,185,561.87
Step by Step Solution
- Step 1: Write the proportion equation
4,249,840.80 : 6,378,908.40 = 2,122,327.20 : x - Step 2: Convert to fraction form
4,249,840.80/6,378,908.40 = 2,122,327.20/x - Step 3: Cross multiply
4,249,840.80x = 6,378,908.40 × 2,122,327.20 - Step 4: Simplify right side
4,249,840.80x = 13,538,130,803,628.48 - Step 5: Solve for x
x = 13,538,130,803,628.48/4,249,840.80 - Step 6: Final answer
x = 3,185,561.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.