Finding the Fourth Proportional to 630,371.09, 869,908.06 and 358,439.05
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Solution
The fourth proportional to 630,371.09, 869,908.06 and 358,439.05 is: 494,643.59
Step by Step Solution
- Step 1: Write the proportion equation
630,371.09 : 869,908.06 = 358,439.05 : x - Step 2: Convert to fraction form
630,371.09/869,908.06 = 358,439.05/x - Step 3: Cross multiply
630,371.09x = 869,908.06 × 358,439.05 - Step 4: Simplify right side
630,371.09x = 311,809,015,542.88 - Step 5: Solve for x
x = 311,809,015,542.88/630,371.09 - Step 6: Final answer
x = 494,643.59
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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.