Finding the Fourth Proportional to 656,624.65, 905,987.68 and 398,495.88
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Solution
The fourth proportional to 656,624.65, 905,987.68 and 398,495.88 is: 549,830.65
Step by Step Solution
- Step 1: Write the proportion equation
656,624.65 : 905,987.68 = 398,495.88 : x - Step 2: Convert to fraction form
656,624.65/905,987.68 = 398,495.88/x - Step 3: Cross multiply
656,624.65x = 905,987.68 × 398,495.88 - Step 4: Simplify right side
656,624.65x = 361,032,357,810.76 - Step 5: Solve for x
x = 361,032,357,810.76/656,624.65 - Step 6: Final answer
x = 549,830.65
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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.