Finding the Fourth Proportional to 642,587.99, 962,830.40 and 389,946.15
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Solution
The fourth proportional to 642,587.99, 962,830.40 and 389,946.15 is: 584,281.09
Step by Step Solution
- Step 1: Write the proportion equation
642,587.99 : 962,830.40 = 389,946.15 : x - Step 2: Convert to fraction form
642,587.99/962,830.40 = 389,946.15/x - Step 3: Cross multiply
642,587.99x = 962,830.40 × 389,946.15 - Step 4: Simplify right side
642,587.99x = 375,452,005,633.23 - Step 5: Solve for x
x = 375,452,005,633.23/642,587.99 - Step 6: Final answer
x = 584,281.09
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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.