Finding the Fourth Proportional to 408,890.80, 613,919.40 and 309,746.80
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Solution
The fourth proportional to 408,890.80, 613,919.40 and 309,746.80 is: 465,061.99
Step by Step Solution
- Step 1: Write the proportion equation
408,890.80 : 613,919.40 = 309,746.80 : x - Step 2: Convert to fraction form
408,890.80/613,919.40 = 309,746.80/x - Step 3: Cross multiply
408,890.80x = 613,919.40 × 309,746.80 - Step 4: Simplify right side
408,890.80x = 190,159,569,607.92 - Step 5: Solve for x
x = 190,159,569,607.92/408,890.80 - Step 6: Final answer
x = 465,061.99
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1.5x scale
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.