Finding the Fourth Proportional to 28,386,655.66, 42,579,979.12 and 6,821,257.59
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Solution
The fourth proportional to 28,386,655.66, 42,579,979.12 and 6,821,257.59 is: 10,231,885.34
Step by Step Solution
- Step 1: Write the proportion equation
28,386,655.66 : 42,579,979.12 = 6,821,257.59 : x - Step 2: Convert to fraction form
28,386,655.66/42,579,979.12 = 6,821,257.59/x - Step 3: Cross multiply
28,386,655.66x = 42,579,979.12 × 6,821,257.59 - Step 4: Simplify right side
28,386,655.66x = 290,449,005,762,868.12 - Step 5: Solve for x
x = 290,449,005,762,868.12/28,386,655.66 - Step 6: Final answer
x = 10,231,885.34
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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.