Finding the Fourth Proportional to 8,238,643.20, 12,357,964.80 and 4,876,646.40
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Solution
The fourth proportional to 8,238,643.20, 12,357,964.80 and 4,876,646.40 is: 7,314,969.60
Step by Step Solution
- Step 1: Write the proportion equation
8,238,643.20 : 12,357,964.80 = 4,876,646.40 : x - Step 2: Convert to fraction form
8,238,643.20/12,357,964.80 = 4,876,646.40/x - Step 3: Cross multiply
8,238,643.20x = 12,357,964.80 × 4,876,646.40 - Step 4: Simplify right side
8,238,643.20x = 60,265,424,553,246.73 - Step 5: Solve for x
x = 60,265,424,553,246.73/8,238,643.20 - Step 6: Final answer
x = 7,314,969.60
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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.