Finding the Fourth Proportional to 621,120,802.20, 930,889,946.70 and 330,127,330.20
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Solution
The fourth proportional to 621,120,802.20, 930,889,946.70 and 330,127,330.20 is: 494,770,440.35
Step by Step Solution
- Step 1: Write the proportion equation
621,120,802.20 : 930,889,946.70 = 330,127,330.20 : x - Step 2: Convert to fraction form
621,120,802.20/930,889,946.70 = 330,127,330.20/x - Step 3: Cross multiply
621,120,802.20x = 930,889,946.70 × 330,127,330.20 - Step 4: Simplify right side
621,120,802.20x = 307,312,212,814,091,328 - Step 5: Solve for x
x = 307,312,212,814,091,328/621,120,802.20 - Step 6: Final answer
x = 494,770,440.35
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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.