Finding the Fourth Proportional to 910,271,178.70, 1,256,177,533.38 and 492,583,418.92
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Solution
The fourth proportional to 910,271,178.70, 1,256,177,533.38 and 492,583,418.92 is: 679,766,907.53
Step by Step Solution
- Step 1: Write the proportion equation
910,271,178.70 : 1,256,177,533.38 = 492,583,418.92 : x - Step 2: Convert to fraction form
910,271,178.70/1,256,177,533.38 = 492,583,418.92/x - Step 3: Cross multiply
910,271,178.70x = 1,256,177,533.38 × 492,583,418.92 - Step 4: Simplify right side
910,271,178.70x = 618,772,224,162,812,928 - Step 5: Solve for x
x = 618,772,224,162,812,928/910,271,178.70 - Step 6: Final answer
x = 679,766,907.53
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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.