Finding the Fourth Proportional to 986,896,811.80, 1,480,345,217.70 and 831,928,616.20
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Solution
The fourth proportional to 986,896,811.80, 1,480,345,217.70 and 831,928,616.20 is: 1,247,892,924.30
Step by Step Solution
- Step 1: Write the proportion equation
986,896,811.80 : 1,480,345,217.70 = 831,928,616.20 : x - Step 2: Convert to fraction form
986,896,811.80/1,480,345,217.70 = 831,928,616.20/x - Step 3: Cross multiply
986,896,811.80x = 1,480,345,217.70 × 831,928,616.20 - Step 4: Simplify right side
986,896,811.80x = 1,231,541,548,459,448,832 - Step 5: Solve for x
x = 1,231,541,548,459,448,832/986,896,811.80 - Step 6: Final answer
x = 1,247,892,924.30
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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.