Finding the Fourth Proportional to 420,129,322.65, 630,287,676.14 and 129,025,823.49
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Solution
The fourth proportional to 420,129,322.65, 630,287,676.14 and 129,025,823.49 is: 193,567,509.01
Step by Step Solution
- Step 1: Write the proportion equation
420,129,322.65 : 630,287,676.14 = 129,025,823.49 : x - Step 2: Convert to fraction form
420,129,322.65/630,287,676.14 = 129,025,823.49/x - Step 3: Cross multiply
420,129,322.65x = 630,287,676.14 × 129,025,823.49 - Step 4: Simplify right side
420,129,322.65x = 81,323,386,448,916,784 - Step 5: Solve for x
x = 81,323,386,448,916,784/420,129,322.65 - Step 6: Final answer
x = 193,567,509.01
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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.