Finding the Fourth Proportional to 646,681.41, 892,352.75 and 398,283.80
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Solution
The fourth proportional to 646,681.41, 892,352.75 and 398,283.80 is: 549,590.00
Step by Step Solution
- Step 1: Write the proportion equation
646,681.41 : 892,352.75 = 398,283.80 : x - Step 2: Convert to fraction form
646,681.41/892,352.75 = 398,283.80/x - Step 3: Cross multiply
646,681.41x = 892,352.75 × 398,283.80 - Step 4: Simplify right side
646,681.41x = 355,409,637,757.27 - Step 5: Solve for x
x = 355,409,637,757.27/646,681.41 - Step 6: Final answer
x = 549,590.00
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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.