Finding the Fourth Proportional to 2,153,964.79, 2,972,977.95 and 1,338,784.13
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Solution
The fourth proportional to 2,153,964.79, 2,972,977.95 and 1,338,784.13 is: 1,847,836.93
Step by Step Solution
- Step 1: Write the proportion equation
2,153,964.79 : 2,972,977.95 = 1,338,784.13 : x - Step 2: Convert to fraction form
2,153,964.79/2,972,977.95 = 1,338,784.13/x - Step 3: Cross multiply
2,153,964.79x = 2,972,977.95 × 1,338,784.13 - Step 4: Simplify right side
2,153,964.79x = 3,980,175,676,741.12 - Step 5: Solve for x
x = 3,980,175,676,741.12/2,153,964.79 - Step 6: Final answer
x = 1,847,836.93
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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.