Finding the Fourth Proportional to 910,239,088.75, 1,256,133,273.20 and 492,551,378.35
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Solution
The fourth proportional to 910,239,088.75, 1,256,133,273.20 and 492,551,378.35 is: 679,722,704.46
Step by Step Solution
- Step 1: Write the proportion equation
910,239,088.75 : 1,256,133,273.20 = 492,551,378.35 : x - Step 2: Convert to fraction form
910,239,088.75/1,256,133,273.20 = 492,551,378.35/x - Step 3: Cross multiply
910,239,088.75x = 1,256,133,273.20 × 492,551,378.35 - Step 4: Simplify right side
910,239,088.75x = 618,710,175,105,957,120 - Step 5: Solve for x
x = 618,710,175,105,957,120/910,239,088.75 - Step 6: Final answer
x = 679,722,704.46
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1.5x scale
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.