Finding the Fourth Proportional to 630,668.40, 870,342.70 and 358,729.31
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Solution
The fourth proportional to 630,668.40, 870,342.70 and 358,729.31 is: 495,057.99
Step by Step Solution
- Step 1: Write the proportion equation
630,668.40 : 870,342.70 = 358,729.31 : x - Step 2: Convert to fraction form
630,668.40/870,342.70 = 358,729.31/x - Step 3: Cross multiply
630,668.40x = 870,342.70 × 358,729.31 - Step 4: Simplify right side
630,668.40x = 312,217,432,281.58 - Step 5: Solve for x
x = 312,217,432,281.58/630,668.40 - Step 6: Final answer
x = 495,057.99
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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.